>>2433885Spray with some beef bile, alcohol & paraben free baby soap, and/or seaweed/yucca extract to break the surface tension without killing good cultures. Beef bile & baby soap are your cheapest options, the latter two are only if you care about calling the whole process vegan.
Increase the rate of decay by adding fresh cattle or rabbit droppings and keep the pile damp for a few days so the enzymes have a chance to work their way down. Once the cellulose is cut into simpler sugars, it doesn't tend to repel water anymore.