wasp nest in air exchange vent

Hello,

I noticed today we have a wasp nest in our air exchange vent that pulls air into our home.

I was out spraying some tempo around the house and noticed the nest when doing that. I did spray some temp as close i dare into the vent. I am wondering is there any issue in my shooting some of that wasp killer stuff in that vent or do i have to worry about it circulating around my house later on? I say later as we aren't currently using the a/c or furnace currently since the weather is so nice. Maybe me shooting temp close to the vent will have the same result as the wasp spray.

Also, I live in a cold climate which the weather is sure to change in the next month or two. Should i just leave it alone until the frost comes one night and remove it then?

Any tips would be great. Thanks.

 

I wouldn't shoot chemicals into the vent, not only might it end up circulating inside, but might corrode the heat exchanger.

I think waiting for a killing frost makes a lot of sense if it won't be that long. Is it a paper nest or mud tubes?

 

Winter will solve this problem. If you ever deal with honeybees though, be aware that the entire colony will overwinter and continue growing so winter would not solve that problem, but all others, yes.

Otherwise, you could get an aerosol can of flying insect spray and spray into the vent as flying insect spray doesn’t leave a residual. It kills while it’s in the air and then dissipates. Crawling insect spray leaves a residual insecticide so that as insects crawl through it they pick up the residual and die. Flying insect spray, generally a pyrethrin base, only kills while it’s in the air.

 

do you guys think i should try and clean out that tempo that may have gotten in the vent? I am not sure how far it would have gotten in there being the vent is on?

Also, when it freezes do you think I can simply unscrew the face of the vent and pull the nest out and throw it? It doesn't look like it is mud it looks like paper the best I can tell.

Last, when I take this vent cover off what can you do to prevent this from happening again?

 

Don’t bother cleaning. When Tempo dries it stays put.

Yep. Just throw it away.

Can you put screening material behind the vent as you put it back on? Make sure that air can still flow.

 

PABugman, I am pretty impress with your explanation of flying insect spray and crawling insect spray. Learned something new today.