Manufactured by Therford, the economical Activ range has the same advantages as the Thetford Aqua products, use a similar dose, but are effective for a slightly shorter period.
 
Biological toilet fluid, use 60ml per 10 litre holding tank capacity.
 
• Safe to empty in septic tank
• Lasts 2-3 days with average use
• It remains liquid up to -20° and remains active after defrosting