Great Question! Kick Defenders™ save you from that disgusting wet shoe feeling, they save you from stained shoes, and they save your wallet from constantly spending money to replace dirty shoes. Perhaps you've heard of the Pareto Distribution, or the "80-20 rule." This rule explains the phenomenon of unequal distributions that are observed in nearly any system. For instance, 80% of the worlds wealth is held by only 20% of people. Your shoes are no different, 80% of the dirt and grime that accumulates comes from just 20% of the time spent wearing them. The few days where you have to walk through dirty environments such as rain or snow are responsible for a majority of the dirt accumulated. If you use Kick Defenders™ to cut out the grime accumulated on these particularly problemsome days you can keep your shoes up to 80% cleaner!