- Nonpara blocks are water soluble and leave a fresh fragrance with each flush to counteract odors. Paradichlorobenzene blocks are air soluble and provide 24-hr. protection against offensive odors. Para blocks not available in all states. Toilet Bowl Rim Hangers 2ZXE8 and 2ZXE7 have rust-free plastic hangers. Urinal Screens have odor counteractants and a protective plumbing system screen. Wall Block 2ZXE9 is a 24-oz. block with individual paper carton for hanging.
- Restroom Deodorizers