Seems mine might have came from the garden because after we thinned out everything and removed all of the cover we noticed quite a few. I'm also trying the Cutter Backyard Bug Control. I did one spraying but then read further down in the instructions where it says to thoroughly water the yard first. Good thing I bought 2 bottles earlier this year! Just went out and still see quite a few - don't know if they're dying, going to die or continuing with their havoc.