Electric Mud-Removers for Boots and Shoes

Hi

Does someone knows some suppliers or manufacturers of electric mud removers for boots or shoes... the ones with elctric brushs. You just have to put your boots in it and it's doing the job by itself.

Im working on the construction of a building. And we have to put these mud removers at the entrances of the building... but i have no idea who can provide me this kind of product! Im not even sure if we call this a mud remover... but for the persons who know what i'm talking about and have some informations... it will be nice to answer me!

Suppliers or manufacturers in Canada or the province of Quebec will be great!!