{"id":3343,"date":"2026-07-21T10:19:47","date_gmt":"2026-07-21T14:19:47","guid":{"rendered":"https:\/\/avalancheextermination.ca\/blogue\/comment-trouver-un-nid-de-guepes-avant-quil-represente-un-risque\/"},"modified":"2026-07-21T11:03:10","modified_gmt":"2026-07-21T15:03:10","slug":"how-to-find-wasp-nest-before-danger","status":"publish","type":"post","link":"https:\/\/avalancheextermination.ca\/en\/blog\/how-to-find-wasp-nest-before-danger\/","title":{"rendered":"How to find a wasp nest before it\u00a0represents\u00a0a risk?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Finding <strong>a wasp nest<\/strong> allows you to <strong>locate it before the colony becomes too large<\/strong>. Learn to recognize it early on in the season and to <strong>detect the signs<\/strong> of its presence.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do you suspect that\u00a0<strong>wasps might be present on or around your property<\/strong>?\u00a0Don\u2019t\u00a0hesitate to call a\u00a0<a href=\"https:\/\/avalancheextermination.ca\/en\/contact\/\">wasp exterminator<\/a>\u00a0to get rid of it safely.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why should a wasp nest be detected rapidly?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quick detection of a wasp nest\u00a0<\/strong>allows you to do something about it while the nest is still small and easy to eliminate. In fact,\u00a0<strong>wasps often take up residence in discreet places<\/strong>\u00a0so as to\u00a0build their nest away from prying eyes.\u00a0As a result,\u00a0the nest will go unnoticed for weeks, grow larger and pose an ever-increasing risk to the people nearby.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A small nest can become a problem in just a few weeks<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A\u00a0<strong>colony of wasps<\/strong>\u00a0can grow fast during the summer. The heat accelerates their metabolism,\u00a0and larva production increases<sup>1<\/sup>. Some nests, like those of the\u00a0<em>Vespula<\/em>, can thus go from a few individuals to several thousand wasps in a few weeks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When a nest begins to increase in size,\u00a0<strong>more and more\u00a0wasps become noticeable<\/strong>\u00a0around the property, as there are more of them looking for food. It is\u00a0not uncommon\u00a0for exterminators to receive more calls about\u00a0<strong><a href=\"\/en\/blog\/what-to-do-with-wasp-nest\/\">wasp nests<\/a><\/strong>\u00a0during\u00a0periods\u00a0of very warm weather.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Dangers to the property\u2019s occupants<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A nest that goes unnoticed at the start of the season can eventually house thousands of wasps in August. In autumn, as the\u00a0<strong>wasps\u00a0have become\u00a0numerous<\/strong>\u00a0and food becomes\u00a0scarcer, they can become\u00a0<strong>more aggressive<\/strong>.\u00a0If the nest\u00a0is located in\u00a0a high-traffic area,\u00a0like near a terrace, an entryway or a playground,\u00a0<strong>the risk of multiple stings increases<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to the Association of Allergists and Immunologists of Qu\u00e9bec, the\u00a0<a href=\"https:\/\/allerg.qc.ca\/Information_allergique\/5_2_insectes_en.html\" target=\"_blank\" rel=\"noreferrer noopener\">risk of having an\u00a0allergy to <strong>stinging venomous insects is around 1%<\/strong><\/a>. However, two types of dangers are associated with wasp stings:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Some people who have had a skin reaction to a wasp sting in the past may develop a\u00a0<strong>severe allergic reaction<\/strong>\u00a0to a single wasp sting afterward.<\/li>\n\n\n\n<li>A high number of simultaneous stings (as during an attack by a\u00a0swarm)\u00a0can cause a\u00a0<strong>toxic reaction to the venom<\/strong>.\u00a0Children can experience a toxic response\u00a0as a result of\u00a0only four or five stings, even if they are not allergic to stings.<\/li>\n<\/ol>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\"><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Pets are also at risk of exposure to this danger, as they can react strongly after even a single\u00a0<strong>sting from a wasp<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What does a wasp nest look like when it begins?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Wasp nests look different depending on the species. The paper nest is often the easiest to recognize. When\u00a0it\u2019s\u00a0starting to be built, it usually resembles a\u00a0<strong>small, greyish paper ball<\/strong>. At the start of the season, it\u00a0won\u2019t\u00a0be larger than a golf ball.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Depending on the stage of its development, sometimes the nest\u2019s exterior shell is not present. In such a case, by looking underneath,\u00a0it is possible to\u00a0observe\u00a0the\u00a0<strong>cells<\/strong>\u00a0that will compose the nest. For that matter, some nests\u00a0maintain\u00a0this open,\u00a0<strong>parasol<\/strong>-shaped form throughout the entire season.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are also other types of nests, such as underground nests and mud nests, which are constructed by mud-dauber wasps.\u00a0The latter\u2019s nests look like small tubes made of dried clay.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Why do small nests often go unnoticed?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Wasps seek out places that are warm,\u00a0dry\u00a0and undisturbed\u00a0in order to\u00a0establish\u00a0their nest. These criteria often lead them to out-of-the-way spots where practically no one will see the nest.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Furthermore,\u00a0<strong>at first,\u00a0the queen cares for the nest entirely on her own<\/strong>, building the cells where she will lay her eggs and then feed the larvae herself. It is only three to four weeks later that the first\u00a0<strong>workers<\/strong>\u00a0will be ready to take over. But until that moment arrives, the signs that a nest is present are much less visible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A newly started nest can, therefore,\u00a0be difficult to notice in its\u00a0early stages.<\/strong>\u00a0Vigilance is nonetheless\u00a0required, as this little nest will get big\u00a0and\u00a0fast.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What are the signs that a wasp nest is present?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As we saw earlier, wasp nests can be discreet in the beginning. Here are some\u00a0clear signs\u00a0that can alert you and should be\u00a0monitored:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Wasps\u00a0frequently\u00a0coming and going<\/li>\n\n\n\n<li>A repetitive trajectory toward the same place<\/li>\n\n\n\n<li>Activity that focuses around the same opening<\/li>\n\n\n\n<li>Regular presence of several wasps at the same location<\/li>\n\n\n\n<li>Perceptible humming or buzzing sound near a\u00a0structure<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If you notice even one of these signs, inspect the surrounding areas to try to\u00a0locate\u00a0the nest. If in doubt or if\u00a0you\u2019re\u00a0not comfortable with the situation,\u00a0<a href=\"https:\/\/avalancheextermination.ca\/en\/contact\/\" target=\"_blank\" rel=\"noreferrer noopener\">contact an exterminator<\/a>.\u00a0It\u2019s\u00a0always preferable to act early in the season, while the nest is still small and easier to deal with.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>The top 5 places to look for a wasp nest on or around your property<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Once\u00a0you\u2019ve\u00a0noticed\u00a0signs of wasp activity, you can start by conducting a visual inspection of the\u00a0most likely places\u00a0the nest might be. Here are the 5 areas to inspect primarily:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Under eaves\/roof overhangs and soffits:<\/strong>\u00a0these hidden areas protect wasps from wind and rain. Also inspect gutters and corner fittings of the roof.<\/li>\n\n\n\n<li><strong>Under terraces and balconies:<\/strong>\u00a0wasps\u00a0can infiltrate these structures\u00a0in order to\u00a0build their nests\u00a0under the boards.<\/li>\n\n\n\n<li><strong>In sheds:<\/strong>\u00a0the ceilings and frames\/structures of sheds offer\u00a0excellent\u00a0shelter for wasps.<\/li>\n\n\n\n<li><strong>In hedges and trees:\u00a0<\/strong>wasps can nest inside a branch, a hollow tree trunk or a dense hedge without anyone noticing.<\/li>\n\n\n\n<li><strong>In the ground:\u00a0<\/strong>some wasps build their nests\u00a0by digging underground. Look for a circular hole that\u2019s about 2\u202fcm\u00a0to 4\u202fcm (0.75\u202fin\u00a0&#8211;\u00a01.5\u202fin) in diameter, surrounded by a small quantity of fresh dirt and where wasps regularly go in and out.<\/li>\n\n\n\n<li><strong>Inside a wall:\u00a0<\/strong>wasps can also crawl into tiny spaces in brick or exterior cladding to build a nest that will remain well\u00a0hidden within a wall or overhang.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"500\" height=\"350\" data-id=\"3303\" src=\"https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-arbre-2.jpg\" alt=\"\" class=\"wp-image-3303\" srcset=\"https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-arbre-2.jpg 500w, https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-arbre-2-300x210.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"500\" height=\"350\" data-id=\"3305\" src=\"https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-sol.jpg\" alt=\"\" class=\"wp-image-3305\" srcset=\"https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-sol.jpg 500w, https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-sol-300x210.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"500\" height=\"350\" data-id=\"3304\" src=\"https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-mur.jpg\" alt=\"\" class=\"wp-image-3304\" srcset=\"https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-mur.jpg 500w, https:\/\/avalancheextermination.ca\/wp-content\/uploads\/2026\/07\/nid-guepes-mur-300x210.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/figure>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">If you have noticed signs of wasp presence but\u00a0haven\u2019t\u00a0found the nest, you can try to follow the wasps\u2019 activities.\u00a0This should guide you to their nest.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How to follow wasp activity\u00a0in order to\u00a0locate\u00a0their nest<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To\u00a0<strong>locate\u00a0a nest<\/strong>, you can\u00a0<strong>follow the wasps\u2019 activities<\/strong>. Here are a few tips to do this safely:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Make your observations early in the morning or at the end of the afternoon, between 4\u202fp.m. and 7\u202fp.m., when the wasps are returning to the nest at the end of the day.<\/li>\n\n\n\n<li>Observe\u00a0the\u00a0<strong>wasps\u2019 trajectory<\/strong>.\u00a0A wasp returning to its nest flies in a straight line,\u00a0whereas\u00a0a wasp searching for food flies more slowly and often changes direction.<\/li>\n\n\n\n<li>Look out for\u00a0<strong>repetitive comings and goings<\/strong>\u00a0toward\u00a0the\u00a0same point.<\/li>\n\n\n\n<li>Note\u00a0the\u00a0<strong>zones where several wasps converge<\/strong>; this is a good indicator that a nest is nearby.<\/li>\n\n\n\n<li>Keep a safe distance of at least 5 metres (15 feet) away from the nest. It is also recommended to avoid moving around while\u00a0you\u2019re\u00a0conducting your observation.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If the observed trajectories all point toward the same spot,\u00a0it\u2019s\u00a0very likely\u00a0this is where the nest is\u00a0located. However,\u00a0it\u2019s\u00a0also possible the wasps are merely passing\u00a0through\u00a0and the nest is further out.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>How far do wasps travel when searching for food?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Wasps can travel several hundred metres away from their nest\u00a0in order to\u00a0look for food<sup>2<\/sup>.\u00a0Some species can travel over 500 metres.\u00a0So, seeing wasps from time to time\u00a0doesn\u2019t\u00a0systematically mean that a wasp nest is on your property. The nest could very well be\u00a0located\u00a0elsewhere in your neighbourhood or in a nearby wooded area.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, when responding to calls by our clients in Greater Montr\u00e9al and the South-Shore, our technicians report the following tendency: an elevated presence of wasps translates very often to the discovery of a nest nearby, often at a distance of 50\u202fm (250\u202ffeet) or less. So, in many instances, all you need to do is look right around you!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Is it dangerous to leave a wasp nest where it is?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Not always.\u00a0<strong>Wasps play an essential role in the environment<\/strong>. They help control the populations of other insects and\u00a0participate\u00a0in\u00a0<strong>pollination<\/strong>. In the end, the answer depends on where the nest is situated and the degree of its activity.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Low-risk situations<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For example, a\u00a0<strong>nest that is far away from high-traffic areas<\/strong>, with little\u00a0wasp\u00a0activity\u00a0observed, poses few risks.\u00a0It\u2019s\u00a0often all\u00a0right to leave the nest as it is.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>High-risk situations that require rapid action<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Some situations are\u00a0riskier, however, notably if a wasp nest is located\u00a0near:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>an entrance<\/li>\n\n\n\n<li>a terrace or eating area<\/li>\n\n\n\n<li>a playground or play area<\/li>\n\n\n\n<li>a business open to the public<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A nest\u00a0located\u00a0within a wall also requires\u00a0acting\u00a0fast, because the wasps could find a way to enter inside the home in large numbers. Finally, a quick response is important in the case of an underground nest, as the wasps might be provoked into attacking if someone walks on it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is\u00a0all the more\u00a0crucial to act quickly if people in your surroundings are\u00a0<strong>allergic to wasp stings<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What should you do if you discover a wasp nest?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Once\u00a0you\u2019ve\u00a0located\u00a0the nest, here are the right steps to be taken:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Avoid approaching the nest needlessly;<\/li>\n\n\n\n<li>Do not\u00a0attempt\u00a0to move or destroy the nest yourself;<\/li>\n\n\n\n<li>Avoid improvised methods, like homemade traps or ill-suited products;<\/li>\n\n\n\n<li>Ask a professional to assess the situation.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ask a professional exterminator to find and\u00a0eliminate\u00a0a wasp nest<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Do you think\u00a0you\u2019ve\u00a0seen a wasp nest on your property?\u00a0<\/strong><a href=\"https:\/\/avalancheextermination.ca\/en\/contact\/\">Contact Avalanche Extermination<\/a>\u00a0for a prompt and safe inspection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Finding a wasp nest allows you to locate it before the colony becomes too large. Learn to recognize it early on in the season and to detect the signs of its presence. Do you suspect that\u00a0wasps might be present on or around your property?\u00a0Don\u2019t\u00a0hesitate to call a\u00a0wasp exterminator\u00a0to get rid of it safely. Why should [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":3339,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"How to locate a wasp nest before it becomes dangerous?","_seopress_titles_desc":"How to locate a wasp nest before it becomes dangerous? 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