I live in a beach house in North Portugal, and i have this trouble in and outside with my cats and dogs and I use cinnamon, I put cinnamon around they hate cinnamon, I never kill an ant, at least I do not deliberately kill them , because I love to see ants working and communicating, I respect them , sometimes I feed them ...yes, I look for the entrance of the anthill or the small hole, and I just give them food lol ???? .