Are they attracted to pet urine?
I'm seeing a large number of bumble bees in my dog's pen area where there are no flowers, just grass. Do you think they could be attracted to my pet's urine? Wasp spray seems to just knock them down and aggrivate them. I'm going to try some of the suggestions that you've given to others and see if that helps.
We do not believe that they would be attracted to your dog's urine or feces. There could be a nest nearby your dog's pen area and that may be why you frequently find them in that area. If you are going to treat the dog's pen area, remember to remove the dog from that area until the treatment has completely dried. we recommend the products Delta Dust or Suspend SC.