Well, you could squish them, but if there are millions that could take some time! I have had a real bad problem with ants at my house and someone told me to get peppermint oil and put a drop where the ants are coming into the house. I tried it and it worked! Apparently ants do not like the smell of peppermint. It is supposed to work for rats too, but let’s hope I never have to test that theory.