Hello Mark, and welcome to MHF.
We have only used Thetford's own chemicals for the cassette. We tried the green version, which is supposed to be a little more environmentally friendly (though you are still told to dispose of it in the same way) but we found it required higher dosages. We also found that putting in less than the recommended dose of the blue one was a false economy.
As far as bedlinen goes I would recommend my solution if you are buying a van where you have to remake the bed each day. That is - buy a mattress topper that fits the bed - you know, a foam pad about 1.5" thick, and then make out of a sheet a fully-fitted 'case' for it. You don't need any fancy zipping or fixing arrangement - just an overlap and a couple of ties. Put the mattress topper in this and then when you make the bed you just pull it out of the cupboard and lay it on the cushions. Whack on your duvet and , Hey Presto, the bed is made! Turn it over after one week and you have fresh linen!
Harry
We have only used Thetford's own chemicals for the cassette. We tried the green version, which is supposed to be a little more environmentally friendly (though you are still told to dispose of it in the same way) but we found it required higher dosages. We also found that putting in less than the recommended dose of the blue one was a false economy.
As far as bedlinen goes I would recommend my solution if you are buying a van where you have to remake the bed each day. That is - buy a mattress topper that fits the bed - you know, a foam pad about 1.5" thick, and then make out of a sheet a fully-fitted 'case' for it. You don't need any fancy zipping or fixing arrangement - just an overlap and a couple of ties. Put the mattress topper in this and then when you make the bed you just pull it out of the cupboard and lay it on the cushions. Whack on your duvet and , Hey Presto, the bed is made! Turn it over after one week and you have fresh linen!
Harry