Farmgirl - for years we thought we were killing the dung beetles with our wormers, never saw one in our paddies. Turns out we were looking for a beetle bigger than what we have out here. There are many different types of dung b. We have lots of different kinds in our fields, just not BIG ones. And, I didn't know that they could FLY!! We have NEVER used Cydectin. Ivomec, Ivomec knock-offs, Dectomax, Safeguard drench, Valbezen, etc. (used Valbezen & Safeguard about a month prior to bug walk).
Anyway, even the entomologist told the group that dewormers did NOT AFFECT dung beetles. I had heard that Cydectin had to quit claiming they were the only one that didn't kill them. The entomologist is the one that told us that Cydectin was the only company that paid the "millions" to do the testing to prove it so they could claim it. He also was the one that said if you had a bowl of dewormer & you put the dung b in it, it would kill them!