I don’t like insect poisons. Especially the sprays. They smell bad, even the “perfumed” ones (in fact, I think it’s the “perfume” that smells bad), and I never really trusted that they’re safe for me either.
When I lived way out here (photo), where they have a name for rain and wind and fire, there were flying and crawling insects and other little critters galore. My choice was to just live with them, with certain exceptions.
There were Argentine ants by the bazillions all around, but they only rarely came inside. When they did, I used Terro II, a liquid syrup type of bait. The ants glommed onto it and it took really good care of them (for certain values of “took really good care”).
There were carpenter ants around who also didn’t come inside much. Once I left a squished cockroach on a paper towel on the kitchen counter. A few hours later, there was a trail of carpenter ants going to that. Fast forward a few more hours, and they were gone – cockroach carcass and all. There was nothing left but a little hole in the paper towel where the roach had been.
So good on the carpenter ants! They came with a defined mission (Cockroach carcass! Yum!), did their thing with it (munch munch) and then they left. Well done!
There were swarms of tiny flying moths and other winged critters that mostly came in at night. My solution: Leave a light on in the living room at night, so they all flew out of the bedroom and left me alone.
There were also field mice rather regularly. I put snap-traps in several places, mostly underneath, and inspected them regularly and replaced as needed. Once, though, there was one mouse who somehow got wise to snap-traps and refused to take the bait. As much as I hated to do it, I eventually resorted to a glue trap to catch that one, which succeeded. Poor mouse. It got its whole belly side stuck all the way to the very point of its chin. When I picked it up, it was still alive and it looked up at me with a looked that just seemed to be begging me: Oh please, kind monster raptor or whatever you are, just kill me and eat me right now and put me out of my misery!
OTOH, once a mouse died under the bathroom sink. Usually, dead mice just dry up. This one, however, putrefied and stank up the whole place. I had to sop it up with a whole bunch of paper towels, maggots and all, and douse the whole shelf with bleach and let it soak.
Don’t even get me started about the time a squirrel, or something, died somewhere under the floor.