I've probably used a dozen or more cans and never had an issue. I set the cases in load blocks and spray row by row from all four sides at 45 degrees so the inside of the neck gets lubed too. I can lube 200 cases in a matter of min. Last winter I processed over 3500 pieces of LC .223 and .308 without a single stuck case or problem. I just set the load blocks on newspaper or cardboard to keep the overspray off the floor. The blocks get pretty greasy but you can just wash them with dawn or run them through the dishwasher (when the wife isn't looking).