Heavy duty foam scrubber sponges are 2 times more durable than a leading cellulose sponge. These sponge scrubbers are odor resistant because they inhibit the growth of odor causing bacteria on the sponge. Soft and flexible, they maintain their shape and won't harden or crack. The unique scrubber material works hard to tackle tough messes but rinses clean. These sponges may scratch (test first on an inconspicuous area). Odor resistant2 times more durable than leading cellulose spongeSatisfaction guaranteed