I read that they don't effect fish, humans or most animals, but may effect worms and insects including ladybugs and other friends. But there isn't good data yet on what effects if and when on worms.
Thanks Leisa. I just want to use them as organic pest control.
We used them for the first time last year and had not seen a flea until two days ago. Seems like the ant population also was better. We also didn't put them out until later than we should have but this year I'm getting a jump on getting them and going to pick up some tomorrow. BTW, what side of town are you on? We just met Alex today. We live between Sea World and Fiesta Texas. Leisa