I have a pool that seems to be infested with Japanese beetles. I clean it every day and the next morning it seems as if there are twice as many in there as there were the day before. As you can imagine this is very frustrating. Any one have any tips on how to get rid of these very annoying pests? I know I could cover the pool when not in use, but I am curious to see if there is something else I could do without taking the cover on and off everyday. Thanks.