Left oil hand print on my door(truck is white) never used covers or paper floor mats inside to protect the interior. My steering wheel felt greasy and needed to be de-greased.
The oil pit crew were using overalls which didn't look like they been cleaned in awhile.
The service was great, but in the auto industry a clean area shows your craft.
Right before you go and inspect your car they will ask you to Yelp, wait until you see the end results....