I finally had to break down and give the girls a bath. On a recommendation from a friend, I went to the Barking Lot in Cathedral City. $17 per dog for self wash. Individual stations with a gate, worked perfectly for having both dogs in with me at the same time. A plus when the weather is warm! They have a selection of shampoos, a conditioner and a blueberry facial scrub. Towels are supplied as well as brushes, ear cleaner and cotton balls.
It was all very clean and I can definitely endorse utilizing this facility! http://thebarkinglotpalmsprings.com/