Their are a lot of old sorta effective but not really meathoids out their, but I like my teachers, he set the mower over the hole and they all come out to attack it so you just leave it running for a while. It's sick, but it works.
Edit: Okay, I'm sorry, but I have to fix some stuff, it's driving me nuts.
#1. NOT yellowjackets, GROUND BEES or GROUND HORNETS. Please use proper animal names, the methoid of dealing with the animals varries, Yellow Jackets make their homes in holes in stuff, shelterd areas, hollow logs, pipes etc. Most have very small nest with just a few females working together, the ones known for major damedge are the type that often move into piping and have much much larger collenies.
#2. You can NOT kill a ground bee nest with surfice treatment. Their tunnles are incredibly deap and even trying to flood them out with water is nere imposible because of all the saftey tunnles they have.
#3. They are extreamly aggressive and should be approched with caustion, yellow jackets pail in comparison to the ground bee agretion.
#4. Seriously, the lawn mower thing works well because eventually everyone but the queen comes out and she can't survive alone.
#5. Be carfull, they have a back door somewere
Edit: Okay, I'm sorry, but I have to fix some stuff, it's driving me nuts.
#1. NOT yellowjackets, GROUND BEES or GROUND HORNETS. Please use proper animal names, the methoid of dealing with the animals varries, Yellow Jackets make their homes in holes in stuff, shelterd areas, hollow logs, pipes etc. Most have very small nest with just a few females working together, the ones known for major damedge are the type that often move into piping and have much much larger collenies.
#2. You can NOT kill a ground bee nest with surfice treatment. Their tunnles are incredibly deap and even trying to flood them out with water is nere imposible because of all the saftey tunnles they have.
#3. They are extreamly aggressive and should be approched with caustion, yellow jackets pail in comparison to the ground bee agretion.
#4. Seriously, the lawn mower thing works well because eventually everyone but the queen comes out and she can't survive alone.
#5. Be carfull, they have a back door somewere