Cool block prep tips

He did not use a spray gun to rinse the block off with. He used a solvent sprayer with the tube running into the gallon can sitting there by his right elbow. Just like I showed him to do.
I stand corrected. Thanks, I definitely don't want to misinform folks.

So yeah, I thought it was a cool idea. Anything you showed him that he forgot to mention? Because that's a really great idea vs. washing with water.