Along with using Flitz's excellent cleaner for getting imbedded crud and rust out of newly acquired guns I've had good success with their gun wax as well. I have guns rained on while hunting here in Arizona and have never had a problem with rust when the guns have been protected with their wax. The other advantage is it cost's about 1/4 of the cost of Renwax.
Jim

The 2nd Amendment IS an unalienable right.