RIDGE WASHER Pressure Washer Undercarriage Cleaner, 16 Inch Undercarriage Washer, Pressure Washer Under Car Cleaner with Straight Extension Wand, 4000 PSI

I use my truck bidet. https://a.co/d/08V6d1aq If you want a link for my other bidet, let me know. That and moto muck(which I use on my dirt bikes) does the job.