This mornings pix. This was after treatment #2 was left on all night with plastic covering it. This compares it to the original corrosion, and first treatment. The deep areas are still there but getting smaller. The product works great, but requires patience. The plastic sheeting against it kept it wet all night so it can work. It does seem to use itself up and dry out over the heavier rust deposits even when covered requiring multiple applications. A small wire brush and clean rinse water along with drying it off afterwards seems to be all the cleanup required, along with covering it up with primer. I applied treatment #3 this morning and covered it up with plastic again. I will check it today when i get off work. The fact that it is non toxic, biodegradeable is great too. You notice it is working under the cheap brown primer that was sprayed on. But it seems only where the rust was. This is probably because the rust is extending a bit further under the rattlecan primer but is so slight it cant be seen.