That is a good point actually, it was a regular power washer for doing the yard. Are the Mobi and Much-Off ones more gentle?

I'd just like to add, from personal experience  even when you've covered everything electrical up, removed the battery etc, DO NOT USE A POWER WASHER - I've done this before on a regular trek marlin mountain bike, and messed up the grease in the pedals and headset, necessitating both being taken apart and regressed completely. I dread to think what will happen if someone accidentally does it on a motor, a very costly mistake all round.

Ride Rad!