I know this is off topic but I am puzzled?? We got pavers installed 3 weeks ago on our lanai. Since then we are noticing grease type spots, stains appearing. It seems more daily. Some of them actually look like the pads on Rusty's feet???? We are going to the installers tomorrow with pictures to find out what these spots are. Anyone have a clue??? We know they are NOT grease. There are some near our outdoor kitchen on the lanai but they are also scattered all over. My Husband bought a cleaner at Lowe's and nothing! Spots are still there???? Anyone??