A way to get rid of wasps! Lemon with cloves or put out a saucer with cloves in it and wasps hate the scent. Also this works for kittens to stop climbing the christmas tree - all you have to do is poke cloves in to oranges and put them on the tree!
Fill a paper lunch sack with plastic grocery bags and hang it up to discourage bees, hornets, wasps, mud daubers, carpenter bees, and bumble bees. It looks like a hornets nest, and other bees will stay away.
Prevention of wasps and yellow jackets. Slice a fresh cucumber into thin slices and arrange them in a single layer on an aluminum pie plate. The cucumber must be fresh – the pan must be aluminum. The cucumber reacts with the aluminum and gives off a chemical reaction/scent that is undetectable to humans but drives wasps and yellow-jackets away and makes them flee the area.