I see you're in zone-5 so you have fire ants up there? I didn't think they range that far north because of the cold.
I may give the nematodes a try...again. I actually ordered some from a company in Texas back in the 1990's to try. Back in the days of snail-mail ordering. I got ripped off by the company and never received the nematodes.<sigh>
Your environment and mine are two different ones. We have a most, humid environment with few freezes during the winter and may days in the 60, 70, 80 degree ranges. Nothing shuts down completely, only pauses for a thought. Anything laying on the ground that can be considered a "shelter" the ants will build colonies beneath. Even a 2x4 laying on the ground will usually support a small colony. It's really the pits. But, in the garden most of the ants are really of a non-biting species. I can pick peas and okra (which sometimes will be covered in ants) and not get bitten even with ants crawling all over my hands...if I get one trapped, say in the bend of my arm, they will bite but not sting. Naturally with these ants come aphids...it's a battle...usually with soapy water.
But, like I said...I might try the nematodes again...thanks for the suggestion.
