Well Mossy, Brownie told and sold me about it so you might not be interested with your experence with him. But its like shaving cream. You spray in the barrel, and put a patch in both ends. And let it sit for a few hours. Then you see all the blue copper copper come out. Spray again, and she should be done. Not hydrscopic from what I can see (won't attract H2O). Its a scrubless cleaner. I use it when I have don't have alot of time and don't feel like scrubbing the barrel with Sweets or CR-10. I usually let it sit when getting home from the range for 2hour with it in. Then put another application and let it sit until morning. That usually does it. Oil it and put it up.