RE those wands... 3 types I will discuss
The vast majority... not much different than just filling the tank with said garden hose
RV-Twister: May be a serious improvement, this one send out two fairly powerful jets and at an angle so the nozzle spins.. Does a slightly better job
Valterra Master Blaster: now the concept of this one I like, it shoots a solid jet of water that BLASTS the ..... well.. crap.. off the wall.. The design though... Well the nozzle looks a bit.. likely to break off
What I use
1/2 inch PVC pipe, capped the lower end, drilled a hole just under a quarter inch diamater to shoot a jet master blaster style but no "Nose" to break off.
Works fairly well.
