I just got some of this TriNova waterless wash and wax:
https://www.amazon.com/TriNova-Water...s%2C178&sr=8-1
It works, and smells, like ONR, so I think it's a similar formulation. The difference is that you spray it on, wipe it off, so it takes half as long as a full ONR wash. If it's really dirty I'll still use ONR, and use the TriNova between washes. The price seems high, but you mix a half ounce of the product with 15 ounces of water, so it's enough to last at least a year.