For the care and protection of all domestic plumbing.
INSTRUCTIONS FOR USE:
Use the measuring cup and pour 25 ml of Prevent into the sink's drain once a week (starting dose 50 ml). For showers and sinks, use 25 ml every 2 weeks. Rinse the measuring cup and place it on the bottle.
Note: It is advisable to do this in the evening, after using the drains.