In my sand bed I have lots of ant lions. That keeps the ant problem down to a minimum! I have not watched for wasps... but they sound cool. The ant lion pits make it look a like a lunar landscape. Dennis in Cincinnati As an aside, in my previous garden I had a sand bed that was wonderful for > growing some of the fussier alpines. Ants were never a problem, but > burrowing wasps loved it. There were at least three different kinds that > excavated long tunnels, often under plants. Fill then in, they come right > back. Losses were minor, however, and they were fun to watch. > >