After the first time of using it, washed it, placed it back in the bag it came in, and placed it back under the sofa. Next time i go to use it, it smells bad, like mouldy kind of smell. I then start washing the car, and notice that chunks of the wool are coming off it!!!! I only used it once. I guess i must of washed it wrong. Well mum washed it for me. Just used hot water i think, maybe a bit washing up powder. how i can stop this happening next time? what did i really do wrong?