2.5L Stimex Camp FLush Waste Tank chemical for camping toilet septic/flush tank. All camping toilets need to be maintained with suitable chemicals to guarantee proper functioning every time. Stimex 2.5L Camp Flush uses healthy environmentally friendly chemicals that will provide suitable maintenance and hygiene upkeep in the septic/flush tank. nvironmentally sound highly concentrated toilet liquid, designed for the septic or flush tank of all portable, cassette and holding tank toilets. Effective chemical composition prevents scaling and leaves a protective layer in the chemical toilet, so that feces attach to the toilet less easily, therefore increasing hygiene. Removes unpleasant odours, breaks down bacteria, prevents gas forming and leaves a pleasant scent. Manufactured in the Netherlands.