Bests & Worsts Reviews from Amazon

I did a side by side test of this and a product called Evapo-rust that I bought at rural king for $16/gal. I soaked equally rusty bolts and nuts in both for about 2 days and here are the results. Evapo-rust is on the left, Naval Jelly on the right. As you can see, the Naval jelly did not perform as well at penetrating the rust and lifting it. I will note that both products ask that you clean the metal before soaking...I didn't do this. One advantage that Naval Jelly does have is it's thick viscosity. It could be painted on where evaporust cannot.