Hi. I live in a 24/7/365 very hot, horribly humid tropical village in the south American equatorial Andes.
I have tried everything with boric acid for about two years. It won’t make a dent in the many different ant species I am privy to host in my horribly large garden, let alone cockroaches, or any kind of spiders. My cats are wonderful at spotting them so I can jump up and spray the heck out of wherever they run out from, which tends to be out of the same corner of the house running towards me. They also come out of the drains and anything water pipe related. I’ve made numerous boric acid + sugar water solutions for both ants and roaches and followed tons of advice I’ve found online, but nothing seems to work for any “rastreros” here. Raid is okay, the best thing is Baygon.
I heartily dislike using such harsh chemicals and I am concerned about my own health as well as my cats’ using this stuff. My health and that of one of my cats has declined markedly since we all moved here from the US.
I continue to search for friendlier naturalistic solutions. Thx. 