I put some of these around an old dead Hackberry some distance from my house two weeks ago. I knew ther was an infestation at one time and wanted to finish cutting the tree down but not disturbe the hive if they were still there. I checked this afternoon and found termites in one tube. Problem is, the spikes are two or three years old. I bought and put them in the garage when I originally took down the top part of the tree and just forgot about them. Wondering if they are still good.