@Shades-of-Oregon do you have any skunks? They love to eat bees and will dig out the ground bees.
Yes we have weasels, chipmunks, moles , voles, gophers, ground squirrels, mice , rats, owls, condors, hawks, bobcats, opossums, raccoons and coyotes . Phew… I have seen them all. And trapped a few raccoons that have picked on my cats.
However skunks I never have seen one around here. They are terrestrial animals and it’s a bit cold in my area for them in winters. But southern Oregon and eastern Oregon has many skunks, it’s a lot warmer there. I’m up in the mountains which has a much colder climate in winter than southern or eastern Oregon.
I have had several ground bees here because the pastures get very dry in summer. No rain for summer months and lots of plants around to encourage them to build their nests. Clover fields seems to be the biggest calling card for ground bees.
I sneak up on the nest at night when they are all inside the nest and add a foam spectracide in the ground nest opening .That is a workable solution out in the pastures where water is not available. There are other nests where I don’t like to use a spectracide near the dogs area. I use Dawn liquid dish soap pour down the opening at night and add water from the hose down the ground nest causing the soap to foam which covers the bees they cannot fly or larvae cannot mature. That works well if water is accessible to the nest and safer for pets in the area.
I don’t need to do anything with some ground bees nests that are docile bees. It’s only the yellow carpenter and yellowjacket bees that are very aggressive and will attack and sting anyone near by that gets to close to the nest.
Believe me been there and stung many times when mowing over a nest. Not a pleasant experience I swelled up like the Pillsbury doughboy , now allergic to them I carry an epinephrine pen primary treatment with me and wear a hazmat suit when spraying their nests. Aggressive little buggers.