Hello Ecom,
DIRECTION FOR USE: This product is not a fragrance that masks odours, it eliminates them.
1- Flush the tank.
2- Fill with fresh water to cover the bottom of the tank.
3- For a 180 liter tank (40 gal), pour 120 ml (4 oz) of RV-BOSS™ Grey Water Tank Treatment in the drain of the sink or shower and rinse.
4- When the gray water tank is full due to normal use of RV, flush the tank.
NOTE: Do not use with other products. To prevent recurring odours, use RV-BOSS™ Grey Water Tank Treatment after each emptying. DO NOT USE IN THE FRESH WATER TANK.
LIMITED WARRANTY: The manufacturer limits its reponsability to a refund of the product purchase price only. STORAGE: DO NOT FREEZE.
Do not ingest. Avoid contact with eyes, may cause eyeburns. Avoid contact with skin. Handle with care. Keep out of reach of children. FIRST AID TREATMENT : Contains: Copper Sulphate. If swallowed, call a Poison Control Centre or doctor immediately. Do not induce vomiting. SKIN: Wash contaminated skin with soap and water. EYES: Rinse with plenty of water for at least 15 minutes. Occasionally lifting eyelids.