Hi, I have had the same problem, lost my entire cricket colony twice, I have got my crickets in a "big jim" tub, what I found quite useful was to put baby powder underneath as well as around the tub I keep them in, the powder kills ants, uzi thus they stay away and the beauty of it all, it isn't poisonous to your other pets i.e. dogs/cats etc. it does look a bit weird with all the white powder, but it is worth it, I have not had ant problems in the last 2 years. Good luck.