When it's in the house, I always stand my machine on a walk-off mat with an impervious backing (managed to get a couple off a contract cleaner friend), just a little extra protection should your machine decide to spring a leak (which mine did the other day). Only a very small leak from the flow control valve, but it ran down inside the unit and out onto the mat, left a fair size patch, but at least it wasn't on the customers floor.