Awhile... hard to say specifically b/c it depends on what you're applying it to and how you use it. Some people use it only for the leading edges of their car and wheels, others treat the entire vehicle.

During testing we were using 5.6oz cans... the retail version is 10oz... but out of that smaller tester I got about 6 full large trucks and vehicles and change with some to spare.

i'm a zaino guy, curious how adam's stacks up against it... anybody try both?

I won't make any comparisons since I work for Adam's anything I say is gonna be biased (for obvious reasons) but I will say that our entire line comes with a 110% money back satisfaction guarantee, so if you wanted to try our stuff and compare to what you use now its no risk.

If it doesn't impress you enough to make the switch, let us know and we'll buy it back for what you paid + 10%.