+1. A pro detailer turned me on to ONR and the Big Red Sponge, using a grit guard in the bucket. And keeping the BRS damp with ONR in a baggie after use. Try it wiping done interior plastic. Tons of uses. Even granite counter tops.
What I love about ONR is that it really works, universally loved by pros, and is fairly priced. I am convinced that consumer car detailing products were invented so that men could flush away a billion dollars just like women do on cosmetics. i am waiting for the Chemical Guys marketing repackaging greed machine to come out with a different overpriced bird poop remover for each species: crows, blue Jay's, sparrows, Robin's.