ground/digger bee huge infestation

Asked March 8, 2017, 12:17 PM EST

I have a half acer home with a quarter of the property infested by digger ground bees. I have had this problem the 24 years I have lived here but unfortunately the bees are winning the battle big time.Last year the noise from these bees was like something in a horror film. I now have 3 grandchildren tolddling around and have to get rid of these bees. I have been vigilante using contact kill gernade, liquid sevin, granular sevin and powder sevin. I have also tried to tarp over the areas so the bees had no where to go but it was ineffective. I have tried keeping the ground soaked with water all spring to discourage the tunneling, this was also ineffective. At this point there are so many little holes in the backyard it is almost impossible to pour the grannuals into each one .Can you please help me? What do I need to do to eradicate these bees?I feel they are at the point where they have become dangerous to my grand babies. I would like to know how to get rid of them and also if there is a way to keep the bees from hatching, maybe be preemptive and kill the bees before the come out of the ground.

Howard County Maryland

3 Responses

We understand your concern, but we think the use of the many chemicals you listed are of greater risk to your grandchildren than are the mining bees. They are non-aggressive (even when provoked) beneficial pollinators who we generally try to conserve.
Here is our page about them:, which includes a link to a publication that discusses chemical controls. They are rarely controlled in one season.

Mining bees don't nest in areas that have thick healthy turf, so perhaps a lawn renovation is an option for the future? The best time to accomplish this is in the late summer into early fall. Here is our page on that:


I understand how important these bees are to our environment, would you like to relocate them or do you know of someone who would like to have them? I am more then willing to have anyone who would like them come and get them.

There is no one that can relocate these beneficial mining bees and there are no easy answers. These populations can fluctuate from season to season.
Since activity is brief about several weeks it is best to tolerate them. Hopefully, you can try to avoid the area. They like exposed soil and good drainage. The best recommendation is to take the opportunity this fall to overseed and thicken up your turf. With a thick turf they are less noticeable and may move on as it will be harder to dig. See the attached publication for more information