2x5 carpet runner (McKellar Park/Westboro)

The rubber backing on this washable runner is disintegrating, which leaves rubber dust on the floor and rubber bits in the washer. Perhaps the remaining rubber backing can be removed by hosing off/power washing? The top side is still in very good condition and it would be a shame for it to end up in the landfill. Perhaps it could be used outside in a protected area? Porch pick up only, pls.