Found 2 teeny tiny black marks, little lines actually, on the Xpel wrap below the door sill where someone (who shall remain nameless lest he should turn up missing for not being EXTREMELY careful when exiting the passenger side which happens to be the ONLY side he is permitted to occupy for reasons that shall not be discussed here) was a wee bit careless with his flip flop. Fortunately Mr. Clean and his Magic Eraser removed them lickety split with neatness and dispatch. Crisis averted.