It is preferable not to remove the outdoor heating electric heated floors mats from the outlet during the winter. They should always be connected. This way the outdoor heating mats will be ready to do their job when you need them. In case the outdoor heating electric underfloor heating mats are left plugged in all winter, they will still not wear out. Another option is to purchase accessories which can help to operate the outdoor heating electric radiant floor mat automatically. By using the heating mats you can eliminate harsh snow and ice melting chemicals like calcium chloride. So there will be no chemicals tracked inside.