Poor attitude at top rated Good Sam Park, Phoenix,AZ

I use a mobility scooter - I cover it when I am not using it. Can't tell how many times I go and take off the cover and find some dog has been using it as a pee station. When we go somewhere and take the scooter, the cover gets folded up and goes in the car - what a smell sometimes if I don't get it all off.
I am not parking the scooter away from the motorhome but next to the back wheel! Often have watched dog walkers let there dogs do this - Makes me mad.