Pour 1/3 of the contents in the drain and leave to work for 30 minutes.
Flush the drain with plenty of warm water. To prevent pipe clogging, repeat the procedure once weekly with 1/6 of the contents.

If necessary, use protective equipment.
Avoid contact with eyes, skin or clothing.
If in contact with eyes: Flush eyes thoroughly with water for several minutes and seek medical advice/aid.
If swallowed: Call POISON CENTRE or contact a physician if feeling unwell.
Keep closed tight out of the reach of children.