So I finally got around to trying Ultima Waterless Wash. I've never liked the smell of ONR so i thought i'd give this a shot. I found the product to not smell much better than ONR. It did a good job cleaning with one exception. I noticed that my wash media(grout sponge) got really dirty compared to ONR. With ONR, no matter how dirty the sponge got, it always washed out when i put it back in the bucket. With Ultima, my sponge was really dirty looking and it never came clean. SHould I take this as a sign that ONR has way better dirt releasing properties? Maybe I need to go back to ONR?