Ground bees are generally not an issue. They are non-aggressive unless threatened and even then will not go straight for the attack. They are good for the environment and amazing for your lawn so if you have them and they aren’t bothering you it may be a good idea to leave them alone. Bees are currently an endangered species at the moment so keeping them around as much as possible is a very good idea.
Ground bees are nothing like the African honey bees that the western world has gotten so used to. Ground bees are native to this land and they function in a very different way. Ground bees build their nests underground and most of them are solitary. There are many different kinds of these bees such as Mining bees and leaf cutters. There are even blueberries bees and a species of bee called squash. For the gourd, not the action. Now while they are solitary it is very common to find a large number of them nesting in the same place. If you find these bees its best to leave them alone as they may get aggressive if you get to close. There are so many species of these bees that they are essentially impossible to identify and should you have them on your property the best way to find out what they are is to see if they are living in the ground, after that, knowing the species means very little. These bees are furry, have a head, a thorax, and an abdomen and they are very short and round. They have six legs, antenna and a pair of eyes. Some of them may have large mandibles for digging but they are not used to bit mammals.
Now the major distinction between these ground bees and yellowjacket wasps is that they are not predators, they eat honey, no flys. The ground bees pollinate flowers and take the pollen back to the nest to be made into honey. Just like other bees, though don’t try digging the nest up for honey, it probably is not edible. These bees build themselves individual burrows in the soil, they are barely an inch wide and just big enough to fit the bee. You can find them by looking for an ant hill like piles of dirt with a large thumb like hole in the middle. Their preference is for dry soil as wet solid can harm their wings and clump up on them and make it hard to fly.