How to permanently stop bugs coming out of a wall crack

“I started seeing yellowjackets inside my finished basement. Just one or two a day, but I’m certain temperatures we’d be getting 5+.”source ↗

“Yesterday I found the issue- they are coming and going all day long out of the penetration where my air conditioner gets its electricity.”source ↗

“I emptied a can of Raid Yellowjacket/wasp spray into the penetration yesterday and today found a good 20 or so of them dead, but still a ton coming and going. What do y’all like to use?”source ↗

“I rent and we get rats coming inside the walls in the cold weather, and it's that time of year again.”source ↗

“In past had exterminator leave bait for them that he said would kill them and then the corpse would dehydrate and wouldn't smell in the walls.”source ↗

“I tried looking online and found some corn cellulose baits like Wilson and Ratrid (in Canada) that are supposed to do that, but there's no poison, just corn fibre. I can't tell how well it works because the reviews are all over the place.”source ↗

“Carpenter Bees have found this to be a nice spot to drill the sh*t out of my house.”source ↗

“This is a pain in the ass application situation because of the narrow gap of the overhang and the fact that I can't clearly see all the holes”source ↗

“recently i started noticing thooosee aagain coming out of this particular slit, i poured the vodka and they all came out along with maggots, but i cant figure what the hell are these and what to do in order to get rid of them from that slit!!!”source ↗

“Recently I discovered wasps were entering my kitchen from behind an electrical outlet.”source ↗

“They're going in about ten feet off the ground, so it's not somewhere I can get to easily — especially in a way where I can retreat quickly if needed.”source ↗

“I've sprayed with Raid wasp spray, but I don't think it's getting *in there* enough to really kill them off.”source ↗

“I can't get up to the crack(s) without climbing a ladder, and I don't really want to try that in the middle of a swarm of wasps.”source ↗

“Guys I need the most lethal, potent poison to get rid of them!!! I need tips before I call pest control. I don’t want the natural stuff either! I want the real deal killer! I want them gone!!!”source ↗

“I was mostly wondering what I should do?”source ↗

“I bought copper mesh to fill the gaps eventually but I wasn’t sure what to do before that.”source ↗

“I don’t want to kill a bee or even a wasp if it’s a good pollinator that won’t destroy my home.”source ↗

“Seeking advice on how to combat Yellowjacket infestation. I learned late not to seal opening. The entry point, from what I can tell, is sealed with spray foam insulation. That has resulted in a ton of bees coming out on the inside (I’ve identified one spot where they seem to be coming out from).”source ↗

“I sprayed Alpine Wsg by spot treating as close as possible as I could to their entryways points, but some of the exact ones are hard to find. They’ll leave for a day then pop up in full force at other places I haven’t sprayed.”source ↗

“these little suckers are all around my room coming in through my window ac unit, any advice on how to get rid of them without having to spend so much money on and exterminator?”source ↗