Alternative to Toilet Blue?
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Hellfire
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That’s a myth. Modern bio tabs are fine for septic tanks. Our house has a septic tank and the microbes can easily cope. Bio tabs contain enzymes which don’t harm the digestive process.
r4dent
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As regards Bio v non bio washing tablets.
Bio products contain enzymes; enzymes kill bacteria; septic tanks need bacteria to function
To me that suggests never use Bio products.
As far as Blue v Green goes - Look on the Thetford web site.
It says the Green is "Septic tank safe (Test ISO 11734)"
Septic tank is not mentioned on the Blue products.
I know it is only an inference, but ......
Robmac
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Having done some Googling there seem to be quite a few sources which would suggest that you are right.
This is important as using the wrong stuff could cost campsite owners a lot of money if we get it wrong. We actively encourage wildcampers to use sites every few days to empty their waste. It would be good if we could clarify this once and for all and make it known to all of our members what the proper procedures should be.
Encouraging using the wrong stuff (whatever that may be) would not make us look good at all.
Chrisinchip
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Never thought of putting washing tabs in the loo - everyday is a school day on Wildcamping!
We have camped regularly at a local'ish small holding/farm site where they are very clear: Blue chemical kills their septic tank and costs them a lot, green is fine.
We are back there in a couple of weeks and I can ask them about bio vs non-bio washing tabs. May not be very scientific but will be based on their own experience! Sorry, not a lot of help to those who are looking for an answer today.
P.S. I hadn't realised that formaldehyde was no longer in the Blue but I had read it was very potent. Whilst we all knew it was bad for septic tanks, apparently it was also a real problem for sewage works, probably for the same reasons.
We have camped regularly at a local'ish small holding/farm site where they are very clear: Blue chemical kills their septic tank and costs them a lot, green is fine.
We are back there in a couple of weeks and I can ask them about bio vs non-bio washing tabs. May not be very scientific but will be based on their own experience! Sorry, not a lot of help to those who are looking for an answer today.
P.S. I hadn't realised that formaldehyde was no longer in the Blue but I had read it was very potent. Whilst we all knew it was bad for septic tanks, apparently it was also a real problem for sewage works, probably for the same reasons.
Handel10
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We use Dr Bronner liquid castille soap, it's organic vegetable soap no detergents doesn't foam, only need a couple of drops, a little goes a long way. Current favourite is citrus variety. We use it for all cleaning in the van.
trevskoda
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Filling a tank every 2 days, time to see the doc.
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I get Elson organic toilet fluid, which is green, delivered direct from elson.co.uk
barryd
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Is it pretty good at breaking the stuff down? it seems that there is some dispute as to which is right for sceptic tanks and which is not but I guess we know 100% that this stuff is ok for everything. I ordered the Bio tabs but might just have a ride up to the dealers and get one of them.
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I’m struggling with your maths here, plus I can get bio tablets at 16p each?
Rolyan57
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I can only go on my experience, but I only ever use the Elsan organic green. It’s effective in that it breaks stuff down (especially if driving around) and seems to smell okay. I put it in the rinse tank.
It’s definitely suitable for organic/septic tanks. It’s not too expensive and is next day delivery on Amazon prime, or is stocked in many places.
I’m not knocking other solutions, but the above works for me, is effective and efficient.
Rolyan57
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Expectations and how it’s used.Just read the reviews on Amazon for Elson Green Organic fluid and most are praising it to the high heavens but then you have a fair few with one star stating its absolutely useless.
How can that be?
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Ah I see how you are working it now, on a daily basis the green stuff is 35p more expensive, but it’s 70p more expensive each time. Or with my bio tablets the green stuff is £1.04p more expensive each time 
colinm
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This is from OAL article last year, some 'blues' are Formaldehyde free, but maybe not all, definatly not 'Blue Diamond, Blue', no mention of Elsan or Thetford, as they are most probably advertisers in MMM etc I'm think they would be keen to point out if they where Formaldehyde free.
Caravan Toilet Chemicals: Everything you need to know but don't want to thi
Caravan magazine puts a peg on its nose and explores the green, blue and pink world of caravan toilet chemicals....www.outandaboutlive.co.uk
I would also note, on Thetford website the 'Green' shows as "Septic tank safe (Test ISO 11734)", but 'Blue' doesn't state this.
r4dent
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Depends on how many people and how much beer.Filling a tank every 2 days, time to see the doc.
r4dent
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Ah I see how you are working it now, on a daily basis the green stuff is 35p more expensive, but it’s 70p more expensive each time. Or with my bio tablets the green stuff is £1.04p more expensive each time
But, even with your 16p tablets, if you only empty every third day the daily saving is only 35p.
You may think this level of saving justifies potentially damaging someone's septic tank to,
personally I don't .
Another money saving tip you may wish to consider is using both sides of the toilet paper.