Mask the stinky odour coming from your grey water drains with the scent of ocean breeze fragrance from Thetford s Grey Water Fresh Concentrated 800ml.Based on a 100 litre grey water tank capacity one 80ml dose will last the sniff test for up to 7 days. One bottle caters for 10 doses which will see you through over 2 months. This fluid is concentrated strong and effective and will allow you to empty your grey water tank without the gross smell. It also reduces deposit formation inside the tank and keeps the water fresh and clean for longer.Keep the adventure rollin without offensive odours from your grey water tank with Thetford s Grey Water Fresh Concentrated 800ml. Features Use in grey water tanks Pleasant ocean breeze scent Concentrated formula 800ml = 10 doses 1 dose stays active up to 7 days Use 80mls per 100L tank capacity Strong and effective Outstanding odour control Reduces deposit formation inside tank Keeps grey water fresh and clean for longer Convenient small bottle Specifications External Dimensions 10L x 5.5W x 22H cm Packed Dimensions 10L x 5.5W x 22H cm Type 0.85 Kg Capacity 0.80 L Weight 0.90 Kg