for months have had bees going in bathroom exhaust fan from where goes out in side of house, not sure what kind of bees,thought to be baby wasp at first,tried black flag for wasp and wasp trap with water and poison inside jug hung from gutter,did not work,trouble is getting worse,they are getting inside walls and have been swatting them, by windows and sliding glass window where they like to frequent,the exhaust fan to outside is the main port,anything that you can spray them with around there where they go in at or that well get rid of them,they are getting in walls and ceiling

Have you ever thought of actually excluding a future invasion once and for all? Perhaps a cover around the exhaust fan small enough not to allow them into the exhaust fan housing

Doug Fields of http://FieldsDevSupply.com/ventcovers.html can custom make most anything we need in our industry..Not knowing the species Doug can not help you but probably with 3/8 or 1/4" mesh will work. So a proper id will help a lot.

Are they,wasps,hornets,bees?

Basic concept is to eliminate the attraction, kill what is inside and then exclude them from re-entering. Job done!

or better yet, give me a call, name is Jordan, Buds Nuisance Wildlife Removal and i can come and take care of that problem for you.

they look like wasps,not black hornets. i picked them up and did not get stung.anyone know of spray that well kill them,black flag does nothing

Black flag should kill any wasp, hornet or bee probably just not as quick as you are looking for. You probably need a product with a "quick knock down". They are on your shelves to any consumer just read the labels.

If you are in the industry there are other products out there we use.

If this a regular problem I still recommend the source of infestation your vent and a good vent cover to stop any further infestation in the future.

It sounds as though they may be yellow jackets as they commonly are making entry through vents. Topical sprays can contact kill. However likley there is a nest in that immediate area.They are drafting into the house via air flow detection like bats. You must kill the foraging bees as well as those maintaining the nest. In that case a residual dust is the best means of thorough treatment.

what happens when the first good frost hits? does the problem end? what happend to the bees? i think they must be yellow jackets. thanks alot for the info. well try black flag again and maybe buy something else

I had bee problems and they kept coming into the basement somehow. Well come to find out they came thru where the air conditioning freon pipe came in. I lifted up the ceiling tile nad there was the paper wasp nest, two of them. i sprayed with bee killer and it worked. A couple days later the smell was awful, dead bee larve. So I shopvaccumed them out and pluged the hole. Never a problem again. so you might need an expert to prevent any smelly mess by killin them. Good Luck! larry

i sprayed raid by exhaust fan oulet where goes to outside at.and dropped a bunch,ever since doing that and the weather getting into upper 30s at nite,they have been wanting to come in house more and have been swatting 20 or 30 a day, getting to nests would involve removing drywall from wall and ceiling,when it gets below 32 and freezes hard outside,well that be the end of yellow jackets or well it take till winter

sprayed the hole in wall to outside where exhaust fan vents with expanding foam,to keep them from coming in,not sure if they well try other entances like chimmney for water heater? still swatting them inside heavily,what happens to the ones trapped inside house in walls and ceiling in the cold weather coming up in low 30s? anyone know how long yellow jackets could bother inside house?

If it is your own home, turn off any source of ignition. get foggers from the hardware store, remove the vent and let em have it. The gas will find them if you use enough. Then go out with a caulk gun and seal the areas where you see them gaining access. It may take more than one try.