On non-porous surfaces like plastic, I use an eraser from a pencil. Works every time. Also, for marks on lenoleum, you take a tennis ball and put on the end of a broom handle and just a little elbo grease and the black marks come off. We used this for taking soccer pictures in ...
I learned a little trick several years back toremove oil/grease/fabric softener stains from clothes… original Dawn. This runs about $1 at Wal-Mart. I squirt a small amount on the spot and with an soft bristled brush rub it in. Wash normally and it should come out good as new! Dawn ...