PARA-ZENE Fresh-O-Bowl® deodorizers offer an inexpensive and effective method of odor control in toilet bowls and garbage cans. Packed in easy to remove cellophane, they are ready to use with a built-in plastic hanger. Each deodorizer block is 99% pure para dichlorobenzene with an added fragrance to mask offensive odors.Fresh-O-Bowl® offers the same powerful deodorizing strength as those used in institutions and public facilities. It is a proven seller, performing as well as comparable competitive brands for over 20 years. Whether pegged on a clip strip or displayed on the shelf, Fresh-O-Bowl® sells best when positioned near toilet tissue and other bathroom products or near garbage bags and containers.