I have 6 hummingbird feeders and the wasps are on top of one another and cover the entire area of the feeders. I have tried filling bowls of sugar water and putting the bowls away from the feeders but that only brings more wasps. I have used fly strips being very cautious not to attract any bird or butterfly. I have set out water bottles with a small amount of sugar water in them and many wasps have been trapped in the bottles. I have lost many hummingbirds due to their inability to use the feeders.
Please help!