The back of the IKEA Toftbo mat isn’t grippy, so it may move around some, depending on the kind of floor you have ... to be much more durable than the rubber backing on other, similar mats.
If you applied a carpet and upholstery cleaner to the floor mats, go over the area with a clean rag dampened with water to remove both stains and residue left behind from the stain remover; stubborn ...