wrote on Jan 6^th, 2010 at 8:10am:

The biggest issue you will find is emptying the 'cassette'.... Normal caravan flushes (pink and blue) are not friendly to the bio-digesters generally in use on many rural sites. If you plan ahead and fill up with 'eco' products you may get a positive response.

Thanks Harvo,
We don't like the smell of the pink/blue types, so don't use them.

But thats a good thought on using a type for bio-digesters.

J