Looked at a job today - I really don't know if I fancy it, Its a large "shed" with a dozen or more tanks of cooking oil for recycling inside - not been cleaned for years so lots of dust and grime but the big issue are the large leaks on the floor in some bays the oil is 2 to 3 inches deep and solidified
Any one with experience in this sort of thing with some pointers ?
cheers
Darran