An article by Rob Gray

Your can buy toilet chemicals for a small fortune, or you can make your own.

Motorhome toilets need chemicals to break the waste down into a slurry that's easy to dispose of.

You can buy this chemical for about $50 per four litres, or you can make your own for about a tenth of that price.

Ingredients

250gm powdered Borax
600ml cloudy ammonia
1 bottle MYO (200ml)

Procedure Use as much hot water as required to dissolve the Borax
Add MYO and ammonia
Add cold water to take the total to five litres

We use 250ml of this mixture in an 80-litre black water holding tank and it seems to do the job.

NOTE: MYO (stands for Make Your Own disinfectant) is a brand of concentrated disinfectant available (as are all the other ingredients) from Woollies and probably all other major supermarkets.