After having an off year last year, it appears the ants have returned in force this summer. In years past, I used Diazinon to keep them at bay, but it's been banned by the EPA. What would be a good equivalent? I don't know what kind of ants they are--not fire ants but very tiny black ones. For now I haven't seen more than one or two in the house, so I'm just interested in trying to control them outdoors. They are all over the patio and sidewalks and I'd like to try and kill them off before my cookout on the Fourth so they aren't crawling all over my guests. Any advice is appreciated.