Best tip ever.

So I'm cleaning for a new customer last week. 3 rooms and a hall of crappy PTE carpet. She's pretty dissapointed in the carpet cuz it is all matted down. and just in general looks like crap and is only 2 years old. So I start cleaning do my prespray, scrub with my Rotowash R4, and then carry it down the stairs that she decided not to have cleaned, (cuz its a rental) and I slop dirty picked up prespray onto the stairs as Im carrying the R4 back to the truck. So come back in and tell her the good...

Best tip ever.