I wanted 4 Seasons to treat my ash tree. I had heard about the emerald ash borer, and I was concerned that the trees on my property were at risk. I had 4 Seasons come out to do a soil injection so that if there was any infestation the trees would be safe, as they're very valuable to my property and I don't want to lose them under any circumstances. What's more, treatment is pretty cheap, and it didn't cost me much. I'm very pleased with 4 Seasons, as the emerald ash borer is all over this area and I don't want the trees to disappear.