Skunks are your friend. They dig up and eat the Yellow Jacket nest. I once had a yard with multiple Yellow Jacket nests and every time I went to mow the yard I was stung. I tried and tried to locate all the nests and destroy them without success. When I went back to mow another time, I found holes all over the yard with Yellow Jacket paper nests all over the ground. A skunk had helped me out, and to this day...about 5 years later I have never found any nests in that yard again, but I have found a couple of holes dug up.
The Georgia Department of Ag. site has some good information on Wasps and Hornets. The large Japanese Hornets also catch Yellow Jackets and take them to their larva for food. So I guess they are our friends too.
Every year I run over a few Yellow Jacket nests and almost every year I get stung by them. /forums/images/graemlins/mad.gif They always get you when you are mowing on a Velke behind a walk-behind mower. The mower stirs them up, then you ride directly over the hole a second later.....ouch! Usually if you are on a ZTR, you are going fast enough to escape and hopefully you see them before your next pass. /forums/images/graemlins/grin.gif ...had that happen two weeks ago. I was lucky and spotted them before the next pass.....needless to say, before I left the nest was destroyed.
To destroy the nest, let them settle back down for about 30 minutes or more, walk very slowly and carefully to the hole, then pour your favorite chemical directly down the hole. Usually they will not bother you after they settle back down if you are very careful and approach very slowly. It is always a good idea to have a can of Hornet and Wasp spray with you when you destroy the hole, just in case one or two try to attack you.
After dark is also probably the best time to eliminate the nest. After dark most of the Yellow Jackets have returned to their nest. It is not wise to use a flashlight. /forums/images/graemlins/shocked.gif Would be nice if we didn't have any Yellow Jackets in the U.S.. The I wouldn't have to always be on the lookout for them. They really hurt!!
Curt