Rust prevention on Treet "Black Beauty". Rather than immersing the razor (since I have the Treet Blue Special in several razors now), I just rinse the head of the razor. I got a 1-cup canning jar, discarded the ring, and kept the lid---it forms a tight seal (to prevent evaporation of the alcohol) and I can simply lift it off. I filled it with 91% rubbing alcohol, which I found at the local drugstore: a pint for $2, roughly. The high percentage is important. When I finish the shave, I rinse the razor head in hot water from the tap, shake it out well, immerse the head in the rubbing alcohol and swish it around, then remove it (and replace the lid on the little jar) and put it in the rack to dry. The alcohol displaces the water and then evaporates quickly. I had no problem getting 5 rust-free shaves from a blade. YMMV, but this trick does prevent rust.