Hi, I need a new pre wash, I've used autosmart active xls 4 a while but I've nearly ran out, I'm not too fussed on it being wax safe, I'd like it to clean well to reduce hand washing time, not stain single stage paint if mixed a bit to strong. Now an application question, I've heard snow foam lies around on the ground after its rinsed off I dunno how true it is but I dont want mess lying around on customers floors after I've gone, so if thats the case maybe I'd be best with a non foaming product anda large pressure sprayer to apply it. I'm a car valeter, so value for money in a Product appeals. Recommendations from experience please