Customers have told us what the spots were each time (they were also right next to the wall directly below an outlet). Each time no color transfered to a towel after attempts with TGP, solvent, Pro spotter, etc. I’m with Ron that we warn them it is not going to come out, but we do try anyway just in case. Post was more of a warning to all that haven’t come across one of these, although if someone did have the magic potion it would have been an added bonus.