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- What\u2019s the difference between wasps, hornets and honeybees?<\/a><\/li>\n\n\n\n
- The calendar of wasp behaviour and what to do<\/a><\/li>\n\n\n\n
- Wasp don\u2019ts: 7 essential safety mistakes to avoid<\/a><\/li>\n\n\n\n
- When to call a licensed professional<\/a><\/li>\n<\/ul>\n\n\n\n
\nContact Rentokil Ireland today to schedule your professional wasp nest inspection and removal.\u00a0<\/a><\/div>\n<\/div>\n\n\n\n<\/p>\n\n\n\n
What\u2019s the difference between wasps, hornets and honeybees?<\/strong><\/h2>\n\n\n\n
Before you take any action against a black and yellow insect pest on your property, you must accurately identify exactly what you are dealing with. In Ireland, four main stinging insects often cause confusion. Here is how to tell them apart at a glance.<\/p>\n\n\n\n
1. The common wasp and German wasp <\/strong><\/h3>\n\n\n\n
![\"group](\"https:\/\/www.rentokil.ie\/blog\/wp-content\/uploads\/2024\/07\/group-of-wasps-vespular-vulgaris-clustered-on-wood-decking-770x360-1.jpg\")
<\/a><\/figure>\n\n\n\n<\/p>\n\n\n\n
These are the species behind 99% of wasp calls in Ireland. They are smooth, practically hairless, have a distinct pinched waist and feature bright yellow and black bands<\/strong> along their abdomen.<\/p>\n\n\n\n
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- The difference:<\/strong> The common wasp (Vespula vulgaris<\/em>) has an anchor-shaped mark on its face, while the slightly larger German Wasp (Vespula germanica<\/em>) has three distinct black dots on its face.<\/li>\n\n\n\n
- Risk factor:<\/strong> High at certain times<\/strong>. Both species are highly defensive of their nests and become very irritable scavengers seeking sugars by late summer.<\/li>\n<\/ul>\n\n\n\n
2. The European hornet <\/strong><\/h3>\n\n\n\n
![\"european](\"https:\/\/www.rentokil.ie\/blog\/wp-content\/uploads\/2024\/07\/lone-european-hornet-vespa-crabro-sat-on-green-grape-1024x538.jpg\")
<\/a><\/figure>\n\n\n\nThe European hornet (Vespa crabro<\/em>) is a large insect, growing up to 35mm in length, but it is exceptionally rare in Ireland. <\/p>\n\n\n\n
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- Key identifiers:<\/strong> Unlike its Asian cousin (which has made headlines in recent years), the European Hornet has a pale-yellow abdomen with dark brown stripes<\/strong>, a reddish-brown thorax, and entirely brown legs.<\/li>\n\n\n\n
- Risk factor: Low.<\/strong> They are generally peaceful giants and will rarely sting unless you actively threaten their nesting site (usually located in hollow trees or deep wall voids). Unlike wasps, they will fly at twilight and are drawn to indoor lights. <\/li>\n<\/ul>\n\n\n\n
3. Honeybees <\/strong><\/h3>\n\n\n\n
![\"Close-up](\"https:\/\/www.rentokil.ie\/blog\/wp-content\/uploads\/2026\/07\/Honeybees.jpg\")
<\/a><\/figure>\n\n\n\nHoneybees (Apis mellifera<\/em>) have a more rounded body, a thorax with short, light brown hairs and duller amber-brown and golden-yellow stripes on the abdomen. The colony survives over winter by feeding on stored honey. <\/p>\n\n\n\n
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- Honey bees are not treated.<\/strong> Bees are not aggressive by nature and will only sting as an absolute last resort if stepped on or crushed. If a honeybee swarm settles on your property, look for a local beekeeper association to safely relocate it<\/strong>.<\/li>\n<\/ul>\n\n\n\n
4. The invasive Asian hornet <\/strong><\/h3>\n\n\n\n
![\"invasive](\"https:\/\/www.rentokil.ie\/blog\/wp-content\/uploads\/2026\/07\/invasive-Asian-hornet.jpg\")
<\/a>Natural closeup on a queen Asian or yellow-legged hornet, Vespa velutina feeding on rotten fruit.. An aggressive invasive threat to the European honeybees<\/figcaption><\/figure>\n\n\n\n The Asian hornet (Vespa velutina<\/em>) is a highly destructive, non-native invasive species that preys heavily on native honeybees and pollinators, but luckily, so far, it is very rare in Ireland. <\/p>\n\n\n\n
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- The 2026 Asian hornet critical biosecurity alert:<\/strong> Asian hornets<\/strong><\/a> were discovered in late 2025 in the Cork area, and in response, the Asian Hornet Management Group (AHMG), chaired by the National Parks and Wildlife Service, was established. July and August are peak months for the invasive insect, also called the yellow-legged Asian hornet<\/strong>. <\/li>\n\n\n\n
- Key identifiers:<\/strong> They are slightly smaller than a native European hornet but larger than a standard wasp. Look for a velvety dark brown or black thorax<\/strong>, an abdomen that is mostly dark with a single prominent yellow\/orange band near the tail<\/strong>, and distinct bright yellow tips on their legs<\/strong> (often called “yellow socks”). They are inactive at night. <\/li>\n\n\n\n
- Risk factor:<\/strong> Critical.<\/strong> Watch out for large, dark hornets “hawking” (hovering stationary) outside honeybee hives or garden bushes. If you spot one, do not approach the nest; take a photo if you can and report it immediately via the National Biodiversity Data Centre\u2019s Invasive Species portal<\/a>. <\/li>\n<\/ul>\n\n\n\n
Wasp, hornet and honeybee summary table<\/strong><\/h3>\n\n\n\n
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\n \nInsect type<\/th>\n Size<\/th>\n Distinctive colouring<\/th>\n Nest type & location<\/th>\n Aggression level<\/th>\n Action required<\/th>\n <\/tr>\n <\/thead>\n \n Common \/ German wasp<\/td>\n 10\u201315 mm<\/td>\n Bright yellow and black stripes; hairless<\/td>\n Papery grey footballs; attics, sheds, cavity walls<\/td>\n High<\/strong> (late summer)<\/td>\n Call an IPCA professional if a safety risk<\/td>\n <\/tr>\n \n Asian hornet<\/td>\n 25\u201330 mm<\/td>\n Dark velvety body, yellow leg tips<\/strong>, orange face<\/td>\n Massive nests high in trees or on roof eaves<\/td>\n High<\/strong> (threat to biodiversity)<\/td>\n Take a photo & report it immediately<\/strong><\/td>\n <\/tr>\n \n European hornet<\/td>\n 25\u201335 mm<\/td>\n Brown and yellow abdomen, reddish-brown legs<\/td>\n Tree cavities, quiet attics<\/td>\n Low<\/strong> (docile unless provoked)<\/td>\n Leave alone if away from high-traffic zones<\/td>\n <\/tr>\n \n Honeybee<\/td>\n 10 mm<\/td>\n Fuzzy, dull brown\/gold or fat black and orange<\/td>\n Hollow spaces, chimneys<\/td>\n Very low<\/strong><\/td>\n Protect and contact a honeybee swarm collector<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n<\/div>\n\n\n\n The calendar of wasp behaviour and what to do <\/strong><\/h2>\n\n\n\n
A wasp\u2019s behaviour changes dramatically depending on the season. Understanding this timeline allows homeowners and businesses to stay one step ahead, saving money and avoiding painful stings. <\/p>\n\n\n\n
Phase 1: Winter dormancy (December \u2013 February)<\/strong><\/h3>\n\n\n\n
The colony is dead, and the queens are hiding<\/strong><\/p>\n\n\n\n
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- Wasp behaviour:<\/strong> Complete dormancy. The previous year\u2019s colony of workers and the old queen are wiped out by the colder winter temperatures\/frosts. Only newly fertilised queens survive and enter a state of diapause (hibernation). They hide away in cold, dry, undisturbed spots such as attic insulation, woodpiles and behind loose bark. <\/li>\n\n\n\n
- Domestic threat level:<\/strong> ⚪ Zero<\/strong><\/li>\n\n\n\n
- Commercial threat level:<\/strong> ⚪ Zero<\/strong><\/li>\n\n\n\n
- What to do:<\/strong> This is the ideal time for proofing<\/strong>. Inspect your property’s exterior. Seal gaps in brickwork, fit mesh over air bricks, and repair damaged fascia boards. Because the spaces are empty, you can safely block entry points without trapping active insects.<\/li>\n<\/ul>\n\n\n\n
Phase 2: Spring startup (March \u2013 April)<\/strong><\/h3>\n\n\n\n
The wake-up call and scouting phase<\/strong><\/p>\n\n\n\n
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- Wasp behaviour:<\/strong> As ambient temperatures consistently climb above 10\u00b0C, queen wasps emerge from hibernation. Hungry and weak, they forage for early nectar or tree sap before hunting for a nesting site. By mid-April, the queen constructs a golf-ball-sized “embryo nest” out of chewed wood pulp and lays her first batch of eggs. <\/li>\n\n\n\n
- Domestic threat level:<\/strong> 🟡 Low<\/strong> (isolated stings, e.g. if accidentally touching a queen in its shelter).<\/li>\n\n\n\n
- Business threat level:<\/strong> 🟡 Low<\/strong> <\/li>\n\n\n\n
- What to do:<\/strong> Homeowners should check garages, garden sheds and attics weekly. If you spot a tiny golf-ball-sized nest with a single queen, it can easily be removed or treated rapidly by a professional before the population escalates. For businesses with outdoor seating, early spring is the time to set up queen traps<\/strong> to catch colony founders before they lay eggs. <\/li>\n<\/ul>\n\n\n\n
Phase 3: Early summer growth (May \u2013 June)<\/strong><\/h3>\n\n\n\n
The hidden factory<\/strong><\/p>\n\n\n\n
- Domestic threat level:<\/strong> 🟡 Low<\/strong> (isolated stings, e.g. if accidentally touching a queen in its shelter).<\/li>\n\n\n\n
- Domestic threat level:<\/strong> ⚪ Zero<\/strong><\/li>\n\n\n\n
- Key identifiers:<\/strong> They are slightly smaller than a native European hornet but larger than a standard wasp. Look for a velvety dark brown or black thorax<\/strong>, an abdomen that is mostly dark with a single prominent yellow\/orange band near the tail<\/strong>, and distinct bright yellow tips on their legs<\/strong> (often called “yellow socks”). They are inactive at night. <\/li>\n\n\n\n
- The 2026 Asian hornet critical biosecurity alert:<\/strong> Asian hornets<\/strong><\/a> were discovered in late 2025 in the Cork area, and in response, the Asian Hornet Management Group (AHMG), chaired by the National Parks and Wildlife Service, was established. July and August are peak months for the invasive insect, also called the yellow-legged Asian hornet<\/strong>. <\/li>\n\n\n\n
- Risk factor: Low.<\/strong> They are generally peaceful giants and will rarely sting unless you actively threaten their nesting site (usually located in hollow trees or deep wall voids). Unlike wasps, they will fly at twilight and are drawn to indoor lights. <\/li>\n<\/ul>\n\n\n\n
- Risk factor:<\/strong> High at certain times<\/strong>. Both species are highly defensive of their nests and become very irritable scavengers seeking sugars by late summer.<\/li>\n<\/ul>\n\n\n\n
- The calendar of wasp behaviour and what to do<\/a><\/li>\n\n\n\n