If you are like me, you use jetwash machines at gas stations to wash your bike. I do it almost every week. I haven't seen any adverse effects of jetwashing my bike, i just don't aggressively spray water into the nooks and crannies where there is lube or grease (wheel hubs, bottom bracket etc.). Other than that, i think it is fair game. The bike can take it. However, a couple times have i used the soap sprayer before using the jetwash. And after each time i did that, shifters started to act up for both front and rear mechs. What i realized is that soap degreases the moving parts on the rear derailleur and the front mech and after the water is evaporated, they become completely dry. If you happen to experience any hardness in your shifting levers, just spray grease to the moving parts of your front and rear mech and that will soften the shifters.