Comes in various sizes I think, but we get the gallon ones and put them in a plastic spray bottle. It must have some Oxalic acid in it because it smells like Ospho and will sting you if it gets on your skin. We spray it on and keep it wet, then either use a 3M scrub pad to apply it (if we are trying to get some rust off) or use a cloth to wipe a thin layer on. If you don't wipe it off while it is wet it turns whitish in color.

We use it on any bare metal that we won't be getting primer on in the immediate near future. If any rust shows up you just do the 3M pad routine with a little more Picklex and it goes away. Here is some info on it:


http://www.orisonmarketing.com/picklex/picklex20.html

Don