Sani Sticks™ are now available in 5 scents that you drop in your drain once a month to prevent backups, clogs and nasty odors. The sticks rest in the drain pipe trap and slowly release a blend of enzymes to break down food, grease and other organic materials. Great for kitchen sinks, bathroom sinks, bathtubs and utility sinks. Set includes 24 sticks – enough to keep 2 drains clean, clear and odor-free all year long. Safe for septic tanks, too. Scent available in Lavender, Lemon, Orange, Rose or Unscented.