I put my sled inside last night and I woke up with the garage smelling bad of gas. It normal woudnt bother me but I put the dog in it while im at work. I dont want him to get high from the smell. I notice the inside of my sled I have oil and whatever built up on the bottom. I want to degrease it. what is the best way to do it. Just tip it on its side and power wash it with some degreaser?