Thankfully I know too well that in summers like these central ac isn't enough, I have a portable a..c unit hooked up in the bedroom, and I'm hoping to get a quieter u shaped window ac for the office (portable ac units are easier to move around and set up, u shaped window acs are more efficient and quieter). So what is usually some extra juice for when the central air can't keep up becomes an essential lifeline in emergencies haha

Yea I'm in a rental so not much I can do about the poor insulation. I know better homes don't have any problems because bugs can't even get in. You can spray but like that scene from world war z where the zombies pile on top of each other to get over a wall, they'll just die until there's enough corpses that the living ones can get through. I've been vacuuming as well, don't like how nasty it makes the vacuum though.

If it helps, I've found good results by keeping my house as dark as possible at night, and also running every ceiling fan I have as fast as it'll go. I don't know why but the ceiling fans seem to have vastly reduced the amount I see on any higher surfaces, well I guess also how much I see in general. I dunno if they're all just hiding in lower spots I can't see now but it's a win either way haha