There are stink bugs in my heating/air conditioning vents. Sometimes when my heat kicks on, it smells like a foot that has an armpit and in that armpit is a sweaty stink bug butt. It's horrible and I don't want to use pesticides. This is in my vents so I won't spray any chemicals in there for me, my family and pets to breathe. I prefer using borax to kill fleas and it seems to help keep out most of the stink bugs, too but how can I get it into my vents?