I used some Mothers QD to remove some tree sap yesterday...it did a good job. The sap was on the car for less than 24 hours. I was not happy the sap was on the car considering the day prior I had just put on a layer of Poorboys EX-P. But on the brightside I think it was better that the PB EX-P protection was there! Lesson learned, do not park under trees at friends house!