For anyone who shaves with disposable-cartridge multi-blade razors, the RazorPit is an amazing invention.  It strips out the trapped soap residue and other gunk that cause those blades to feel dull before they actually are, extending the life of a cartridge from a week or two to a couple months. 

If saving a lot of money on refill cartridges isn't enough of an incentive, think about the environmental impact of 20 million American male shavers going through a 5-pack of blades every eight weeks. At 2 ounces a package that's eight thousand tons of waste a year. If you won't use the RazorPit for yourself, use it for the children.