ILKRAUT48

Don't know exactly where to post this question, but has anyone ever had problem with ants getting into their pool ? We live in the Midwest and when it starts getting hot and dry, we will have problems with masses of ants coming to the edge of the inground pool and falling in. We have sprayed them with insect killer or sprayed them with water and it will keep them away for a little while, but they usually reappear. The pool is bordered by the patio on one side and the yard on the other three sides. Does anyone know of a way to stop their invasion ? I have a dog and a cat so it would have to be safe for them. Thanks. Ted