Elevators take a beating. All of the traffic that gets spread throughout the entire building funnels into that small little elevator car. Everyone who works in the building, and every guest who enters, stands in there as they enter and exit. And a lot of soil from outside gets brought into the elevator, since it's normally some of the first carpet people stand on inside the building. So there can be a concentration of soil. We've found that buildings where we'd normally encap clean with the Cimex can require some extra attention in the elevators. What we'd normally do is post-bonnet clean the elevators, following Cimex cleaning, to pull off some additional soil. We'd just throw some 8" bonnets on the Cimex and run back over the elevator carpet while it's still damp. That finishes off the carpet in the elevator leaving it with a very clean and even appearance.