Review on Color Tree Module IRobot Roomba by Alan Lewis

Roomba ran on bare tires. That helped. Now she climbs carpets like a caterpillar. Very easy to install. Did it without instructions. Firmly. Roomba now has no trouble moving. I'm just afraid she'll eat them like the originals because she keeps getting stuck and burning out. They have been working for about two months without any problems. I didn't notice her preferring one side to the other as other reviewers have written. She runs straight like an arrow.