A mobile toilet is designed to work with additives, to make the temporary storage of toilet waste possible when no direct connection to sewage infrastructure is available. Use Thetford additives for an optimal performance of your Cassette and portable toilet and a longer lifespan in order to guarantee a carefree and comfortable holiday. Our waste-holding tank additives guarantee outstanding odour control, waste liquification for easier tank emptying and a reduction of gas build-up. We also offer Thetford Cassette Tank Cleaner: a periodical cleaning agent which you can use 2 to 3 times a year to thoroughly clean the inside of your waste-holding tank and remove stubborn limescale.