3M EXTRA LARGE COMMERCIAL Sponge

3M™ Commercial Sponge C-41 is institutional size for tough jobs that require super absorbency and strength. For longest wear; rinse thoroughly after every use; especially when using with chlorinated cleaners. Rinse thoroughly before using. CAUTION: Rinse thoroughly before and between uses; especially when using with products containing bleach. May be sterilized by boiling. Not for aquarium use.