Sani Sticks the concentrated cleaning and sanitation sticks you drop in the drain once a month to prevent backups, clogs and nasty odors before they start. Keep your drain pipes clear and odor-free all year long! Perfect for the kitchen, vanity, bathtub and utility/mop sinks. Safe for septic tanks. Includes enough Sani Sticks to treat 2 drains for one year. Features Sanistcks 360 Pine Scent Deodorizing Multi-Purpose Cleaner Stick; 24 Count; Specifications Diameter: 1/4 in.; Length: 4 in.; Antibacterial: No; Number of Sticks: 24 stick; Indoor or Outdoor: Indoor; Contains Bleach: No; Product Form: Stick; Organic: Yes; Concentrated: No; Scent: Pine; .