Three other options (admittedly less effective, but the upside is no killing). 1. Give them what they want. I have a bottle of cheap corn syrup I use as a truc

Three other options (admittedly less effective, but the upside is no killing). 1. Give them what they want. I have a bottle of cheap corn syrup I use as a truce offering. If I start getting scouts or the beginnings of an incursion I just dump a big glob of the syrup right next to their nest outside. Everyone disappears from my house within a half hour. Usually, they forget about the kitchen for a couple weeks. Then I repeat. 2. Peppermint oil. The ants here will avoid it. If I smear it across an active ant line it interrupts it even. 3. Ant moat. Works great for sugar products and pet dishes. I use 4 shot glasses full of soapy water holding up a small kitchen rack. The rack is perched on 4 small submerged pillars I added to the rack's feet. Edit: of course an invasive species needs to be dealt with in accordance to the threat to the local ecosystem. I'm just providing options for simple nuisance ants.