Need opinions on anti-rust paint (POR15, Rust Bullet, etc)

Well I know this is a little bit of an old thread but I have had great success in elongating the shelf life of my POR-15. Place one sheet of plastic wrap over the can and push it down to the suface of the POR-15. With the wrap still overhanging the sides of the can replace the cap and pound it secure. Now store it behind the milk in the fridge. Let it get to room temp before applying. Havent had to toss a drop!