Our birds tend to be dirty, I admit. But, in our defense, we usually don't haven enough birds to meet the flight schedule, on a good day. What with inspections, hangar queens, lack of spare parts, lack of fuel budget, you name it, we have a bit of trouble getting time to make runs to the wash-rack. Add in the number of people trying to use it at once...
Remember, the Marines, as a rule, are at the tail end of any supply line. AF first, Marines last. Way it's always been.
When I was in Yuma, the IMA Avionics building was right next to the wash-rack. Heck, you could pull forward out of the "good" parking spaces and onto it, if you had the intestinal fortitude, and the MPs weren't paying attention. Like at 0200, or so. Just for example. Not that *I* would ever do something like that... [whistles a little tune, looking about innocently...]
ANYway, on any given day, they went through lakes worth of water, and gallons of the "wonderful" soap, out there. Kinda nice, since it raised the humidity quite a bit, with no wind. LOT of birds went through there, and there was always a line, except late at night. THAT was Maintenance's time. Other wise, the techs would, literally, burn their hands on the planes, or collapse from heat exhaustion/stroke. Welcome to Yuma...
Pat☺