Bats in the "Belfry" !!!!

Well, maybe not in the belfry, but in a patio umbrella! We have had a problem with mice (under the house and in the walls, not in the house) and actually had an exterminator come out and get rid of them. Of course since we live next to a green belt we will always have them outside. So when we started seeing droppings (yes, poop) on our picnic table (yes, our picnic table) we naturally thought it was from the mice (yuck). So we had the exterminator come out and look, only to discover they were "bat" droppings. They were going up inside the umbrella to get warm and "poop". Needless to say the umbrella is washed and put away for the winter. I'm sure they will find another place to poop, I just hope I don't know where it is.