The staff as well as the owner at Mammoth are extremely nice and friendly. I have used them about a dozen times and have rarely received what I would call a good car wash. I have mentioned numerous times that the dressing they put on the tire sprays on the side of the car as soon as you leave the wash. This produces numerous black oil marks down both sides of the car which I can't believe that know body complains about. I have mentioned this numerous times but no change. The place is understaffed and waits can reach over an hour. Prices are also high for what you get.