I have an ant problem and I have a problem with the little flies. I live in a condo and there is no lanai so both of my litter boxes are inside. There a many little flies around the litter boxs ( that gets cleaned 2x a day) and also ants around the food dishes ( in the kitchen). What can I do to stop either the ants or the flies, I want something that is not going to harm my cats. Thanks for the help