This Duo Tank Cleaner from Thetford is a powerful, concentrated cleaner for waste holding tanks and grey water tanks. It removes scale, encrusting and grease deposits from both tanks and leaves a pleasant citrus fragrance. For best results use 2-3 times a year.

This products allows for:

• 4 cleanings of the waste-holding tank (4 x 200 ml)

• 1 cleaning of the waste-holding tank (200 ml) + 1 cleaning of the grey water tank (600 ml)