Features: Just one stick per month can help to avoid embarrassing smells and nasty water buildup in sinks and showers. Helps eliminate embarrassing odors from drains and prevent clogged sinks. Keeps your drains clean and odor-free all year long with them as part of your cleaning supplies. Helps save money on plumbers and drain snakes as powerful enzymes break down oil and grease to keep drains clean and stink-free. 100 percent safe for plumbing and septic tanks with no toxic chemicals.