Hi all - This is our second year with our in-ground pool. We have a beautiful waterfall built up with stones piled on top of each other. About 2 weeks ago we started seeing bees around the waterfall, and the number is growing by the day! Last night I moved some of the rocks they seem to be going in between, but I see no hive... I don't want to pull away all the rocks because it will be hard to put back together, but I've sprayed two things of Raid into all the cracks & it doesn't seem to be working. Anyone experienced this or have any good advice for me?