I checked my hive yesterday and when I took off the inner cover it was crawling with SHBs. I killed them all and the bees seemed very intent on attacking their dead bodies. I read somewhere about SHB traps made from plastic cardboard , does anyone here use anything like that? I just popped the lid to check the new super I put on and the one below and only noticed SHBs on the inner cover....the bees seemed to have them all corralled up there. What, if anything, do the bees do about the SHBs?