Ecozone Citrus Enzymatic Drain Cleaning Stick Single is suitable for vegans, vegetarians.New to the range, the Citrus Ecozone Drain Sticks are a new innovation in effective drain maintenance. The sticks use powerful natural bacteria and enzymes to break down almost anything (such as soap scum and other organic matter) that gets stuck in the plughole and pipes which cause blockages and bad smells. Actively working to prevent obstructions from occurring, these clever sticks can help to protect your drains all year round with a subtle zesty citrus smell. Safe for septic tanks and aquatic life.Drain Sticks are simple to use, here’s how: 1) Remove one Drain Stick from packaging (check the calendar on the pack to select your starting month). 2) Drop the Drain Stick directly into the plughole and let it get to work. Do not try to remove the Drain Stick. Repeat every month to maintain free-flowing, clean smelling drains. These drains sticks are suitable for use in drains with a typical u-bend or trap.