Pressure sensitive clip holds block in place - even during cleaning - prevents maintenance problems. Elimintes the "clogged toilet syndrome".  3.5 ounce and 4 ounce, sizes fight odors up to 30 days. 100% air activated. Won't dissolve in water so all its fragrance goes into the air not the water. Lasts for 30 days consistently. Works great in high, medium or low traffic areas. No filler materials. Dyed to match the fragrance.

 

Fragrances: cherry, cherry with no dye

 

Packaging: 144 blocks per master case. Bulk pack and other options are also available.