"Green" toilet chemicals

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I never use any flush fluid. It's unnecessary in my opinion. I don't add anything to the cistern at home so......

Some sites insist on green fluid. We encountered one in Lincs and it's a general request in the Outer Hebrides.

Agree AD. They are all we use nowadays. We empty daily usually in MH, pods are easy to use and store. 

Same here David and I usually empty after 5 days ... when we move

“We wanted to take the opportunity, ahead of your upcoming visit, to let you know that we can only accept green fluid with your toilet waste as it is not a chemical emptying point”

We had a stay on a CL recently that asked that we only use green toilet fluid because of the above reason.  I don’t  understand all the ‘ins and outs’ of septic tanks but wouldn’t bio pods upset the balance of these tanks - if they have one?  We have used bio pods occasionally but jury’s out on whether we liked them enough to continue.

thanks for comments so far, I always thought the header tank (pink) fluid was all part of the mix to dissolve the waste completely, i.e. working with the blue stuff. I now wonder if this is why we go through pumps with such monotonous regularity, clear water wouldn't clog them up half as much. 

The pink flush stuff has no purpose in the cassette but I think the myth is that it helps clean the bowl. It has a huge bonus for the manufacturer in that they can sell you two bottles instead of one but many of us swear it is the cause of the black gunge that forms in the tank.

Five days?  You need more roughage in your diet, ET.

 Yes, we've been asked to do the same at an upcoming CL (if we don't have it they will sell us some) but we use a green product anyway and don't use pods. I presume these would have to be non bio which are not effective in a cassette. In a septic tank bio products reduce the efficiency.

 How do places get permitted to be a CL when they do not have a chemical emptying point?   It is a stated requirement of a CL to have "drinking water, chemical emptying and dry rubbish disposal."