Has Anyone Used Electric Floor Heating pads for Under Area Rugs? I saw/heard of these being used in Japan for small rooms as the main source of heat. The room size is much smaller than here. I was just wondering if anyone has used them and if so what the pros and cons are of their use. The idea was worth a try since our electric bill has jumped since we included the "office" for heating. I ordered one to go under the 6x8 foot rug in the work space out there. It would be nice to hear from anyone who has given them a try, or knows of someone who has tried them.