Always wear a long sleeve white shirt, white pants if you have a pair. They go after dark items. When I've run over them I just keep going at the maximum speed I safely can. Only been stung once on the tractor and it has no cab. Haven't had the same luck when walking with ground nesting, aerial yellow jackets or bald faced hornets . Too often have found the nests the hard way. Still maximum stings about 3. Early morning get out the bug spray before it gets the sun on them. We have someone in the county that will come and collect the nests for the venom to make shots for desensitization but they are often a few days out.