Complement urinal and bowl para blocks. Fight odors for up to 60 days. Paradichlorobenzene with cherry fragrance. Individually wrapped. Each block includes cardboard box for hanging.Para block deodorants are air-activated, freshen the air, and eliminate undesirable odors. Made from paradichlorobenzene saturated with liquid deodorants. WARNING: This product contains a chemical known to the State of California to cause cancer.