Kiwi Camping Top Tank Toilet Chemicals 500ml SKU: 268841 MODEL: KC080-001 Error. try again later You've successfully joined the club $ 18 .99 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants Toilet rinse is a top tank additive that will keep the flush water fresh and protect the bowl of your portable toilet. Features and benefits Biodegradable portable toilet treatment chemicals. Keeps flush water fresh. Protects the bowl for easy cleaning.