I sent a post last month about a problem with tiny ants in both kitchens of my duplex. I received many responses - most recommending boric acid powder or products from Home Depot. I had forgotten to mention that I had already tried ant traps and Home Depot products before I called an exterminator. I was familiar with boric acid powder. It is a drying agent - when the bugs walk across it, it sucks the moisture from their bodies. Unfortunately, it is useless outside. Even dew saturates it and renders it useless. I chose Samuel Creeger from this response: EC Pest Control Squirrel Hill. Samuel Creeger 412.422.6757 He's also top rated on Angie's List. I've used him several times, and once for ants in a huge nest in my front yard. He's environmentally conscious, extremely thorough, and reasonable. I've recommended him to several friends, and everyone thinks he is great. I also think he is great. He spent an hour inspecting our kitchens, the outside of house, and our cellar. He identified the ants - honey and odorous house ants. He said that they were difficult to remove - and that spraying would not work - that they would avoid the spray and return when the spray dissipated (I learned that the hard way!). He placed a gel that the ants would eat and take back to their nests. And then, he gave me the name of the gel he used so that I could buy it online and use it myself - rather than paying him to return! He was friendly and thorough. So far, I've just seen a few dead or dying ants. I'll use the gel when I receive it to keep the ants away. Jan