Toilet fluid

Only in the waste tank, redface. 

I only use it in the waste tank. Some do use a drop of scented conditioner in the header tank but I have not tried that. 

Like lots of others, Redface, I can only put additives into the Waste Tank, 'cos my flush water is taken directly from the fresh water tank !!

I've started to put a splash of Zoflora Lemon Zing concentrate into the flush tank along with the usual toilet fluid and it certainly improves the aroma.

Got to say Zoflora is great for spraying in the bowl. Diluted it’s still potent. The one thing I used to be terrified about was spilling blue in the caravan- what a mess it would have made. Lidl bio pods have taken all that worry away and given me an easier life in emptying the cassette. No pong, No chemical smell- what more would I want? Oh yes, the price - £2+ for 20 pods- excellent value!! 

Can’t say fairer than that! 

Thanks for the answers re 'don't put it in header tank'. I have found that to be a bit grungy and difficult to clean with only a small access hole  in the top. As said a bit of pink required perhaps.

White vinegar cleans the header tank well I have found. Leave overnight and then flush into toilet bowl and wipe around to remove any limescale and finally drop into cassette

Pink can cause the gunge.  As ET said, white vinegar works, Thetford themselves suggest Milton, I have used Puriclean as I was doing the water system and find that removes gunge but not scale.

We flush with plain water and use Lidl bio pods in the cassette.

Thanks KJ.