Comments about J.A.W.S. JAWS Spit Anti-Fog 1 oz (30ml):

one small bead on each lens kept things clear, great product.

Comments about J.A.W.S. JAWS Spit Anti-Fog 1 oz (30ml):

Best if used before assembly of you equipment, LET DRY, and slight rinse. Don't just put it in and rinse it out!

Comments about J.A.W.S. JAWS Spit Anti-Fog 1 oz (30ml):

This product Works... eventually, and only if you follow the directions correctly. I did notice that the goggles fogged quicker the first couple applications. After the 3rd application, goggles stayed clear for a good hour: a feat in hot muggy Cancun.

I believe those who dont get good results just didnt follow the directions. You have to apply a SMALL drop of the stuff to the inside lenses of your goggles (in my case) and rub it in using a FINE cloth. It will burn your eyes if you dont flush the goggles with water like the directions say. If done correctly the "spit" works great!

Pros:
Goggles dont fog!
Thick, gel like substance doesnt leak or goop up the outside of the bottle, or come out too fast.
Lasts forever.

Cons:
Who always has a fine cloth with them when diving??
Took a little more work than anticipated. Not a "fire and forget" product, unfortunately.
Doesnt work as well on the first applications.

I only used this in warm water snorkeling, so I cant speak for cold water/deep water diving applications or above-water eye protection uses, though I would trust it in those scenarios too.

Comments about J.A.W.S. JAWS Spit Anti-Fog 1 oz (30ml):

Prior to finding Spit I have tried every method of keeping my mask fog free with limited success. This stuff is the best. I use it only in warm water so I am not sure whether it would work as well in the cool California waters.

Comments about J.A.W.S. JAWS Spit Anti-Fog 1 oz (30ml):

I only needed a tiny drop, and it lasted for an entire day of diving.