The great taboo – using your motorhome or caravan toilet

Published in Caravan Guard News, Caravanning Top Tips, Motorhoming Top Tips, Videos on   - 53 Comments

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  1. Andy Finnegan says:

    Very helpful, better to see how it should be done rather than reading in a book. Just be careful with decanting fluid / chemicals in to a bottle that is a drinks bottle.Using a bottle with a safety cap.


    to prevent condensation over winter months I put saucers filled with salt around the van and it absorbs all moisture. You can dry out the salt and use again next winter

  3. Kevin Draper says:

    Hi great article thanks. Our booking for July has said their shower block will be closed so it’s now important to get this stuff right. One tip I would add is before emptying, open the blade for ten seconds which lets any flush fluid left in the bowl drain into the cassette. Then close it again. I sometimes forget and end up with pink fluid in the cassette housing which has to be mopped up.

  4. Barry Carter says:

    Whilst a seasoned camper and having been Motorhoming for 15 yrs I found the article very interesting especially reading the comments which I’ve never seen so many replies to. We mainly tour using the CMC and CCC club sites and so have used their toilet facilities the only times the washroom and toilet have been fully used for No.2’s is when the grandchildren have been holidaying with us. One thing I’m not quite clear on though is the SOG system, I under that it is chemical free but it only seems to be a negative pressure ventilated system my toilet is a Thetford C260 and it has a ventilation fan and filter. The filter unit connects to the base of the toilet cassette when in position, the fan can be operated prior to use or when the toilet flush is used and is timed to run for around 10 mins, I’ve changed the filter on a yearly basis and it also looks to be a carbon filter but Thetford don’t say this is a chemical free system so what’s the difference?

  5. Alan says:

    Very good article and video. Only fault let down a bit by the video showing the filler cap on the shelf which could easily be knocked into the drain. I always put mine on the floor well clear of the drain.

  6. Martin says:

    The loo should not be flushed until the loo cover has been shut. Stops germs being driven around the space.

  7. Tim Boarer says:

    Good article for those that are new to using their mh or caravan. I know you may think it’s advertising but as already mentioned by some other people. A SOG kit is by far the best way to go and totally environmentally friendly. Keep up the good work.

  8. Martin Woodhead says:

    That was a good article and very informative, we used ours fully for the first time at the national a few years ago and then wondered what all the fuss was about. I particularly thought item 5 on emptying was important as I nearly lost a cap and now it’s put way out of the way lol.

  9. Christopher Cliff says:

    Don’t forget if you have a wastmaster your toilet cassette will fit on top under your two flexy straps as this may be more stable for you to wheel to disposal area and two jobs done in one trip

  10. Steve Botham says:

    A very good article but no mention of the sog system.Would be appreciated

  11. Jason Williams says:

    Newbies beware. Raised, broad or shallow drains at the disposal point and strong winds are not a good combination, so make sure you keep your mouth closed when emptying the cassette. LOL

  12. Tony Wetjen says:

    A useful article although I have long been conversant with onboard facilities. It was interesting to learn that the cheaper
    supermarket toilet paper breaks down in an onboard facility just as well as the designated product. Thetford toilet roll
    is a good deal more expensive than the domestic variety!

    Many thanks,


  13. GRAHAM JAMES says:

    Crikey, I never thought I needed instructions as to how to empty my cassette toilet. But having said that, I didn’t know about those bowl liners; never heard of them before. I might try those. I use my toilet for both, never concerned me. One thing, I have never bothered with dedicated loo roll and I buy the same market leading classic brand I use at home (not a cheap one, but not highly luxurious) and never had an issue with it not breaking down.

  14. John Stephenson says:

    You haven’t mentioned the use of the “SOG” system of cheimical free toilet. It uses a small fan that draws fresh air though the cassette when the flap is open. The extra oxygen aids decomposition and saves the cost of expensive chemicals. It can pay for itself over a couple of seasons. The only maintenance is to replace a carbon impregnated filter perhaps once a year.

  15. Jac says:

    Nope, not in my van. Liquids only.

  16. Carl Battersby says:

    Excellent information especially for new caravanners as I remember things like this being a little daunting when you first start out, Its difficult to remember everything or expect to get things right first time. I used to put a few post-its around to help when I first started just to refresh my memory and help me get things right.

  17. Robert Hayes says:

    Why do people have a toilet an don’t use it ?, I put a cap of Zolflora into the number two catcher excludes the smells a treat an makes it sweet.

  18. Andrew says:

    Excellent article, very informative for people who will be using their onboard toilets for the first time and people like us who have been using them for years as we only really go to field type sites with just a tap and somewhere to empty the effluent. Have to admit that the cassettes are a lot smaller now than the full width old style onboard Thetford cassettes that when full you had to have the strength of Geoff Capes to manhandle.. Well done, enjoyed this video.

  19. Alan Mason says:

    With regard to adding toilet fluid, not all makes have a measurement wthin the toilet cap, such as on the Dometic Toilet. So use the guide on the additive bottle if available.
    I find it hard to understand the taboo about toilets, they are quite sanitary to use these days, not like the early ‘Bucket & Chuck it’ type introduced by Elsan some years ago!

  20. David Jones says:

    I have one of the older, larger Toilet cassette’s and because the wheels on the cassette are not designed for use on rough ground I use a folding sack trolley. I bought it in one supermarkets. I use a bungee hold the cassette and tank liquid, spare gloves onto the trolley.

  21. Paul Clarke says:

    An informative article / video for newbies and the slightly squeamish alike. The only warning I have is that before emptying the cassette remove the slider from over the entry aperture (cassette seal) because if like mine it is a little bit loose, guess where it’s going to end up as you gently shake out the contents into the disposal point.

  22. Richard Miles says:

    Good article. I wondered what that orange button was for! Thanks.

  23. Paul C. Rawbone says:

    Very informative

  24. DIANE LEADER says:

    Once cassette empty when you are leaving site put a tiny squirt of washing up liquid in the cassette and about 50ml of water and leave to agitate on the way home, empty out in the sewer or loo at home and bingo you have a nice clean cassette for next time.

  25. Stephen Lansley says:

    Thank you so much!
    We’ve just bought our first motorhome and your toilet cassette video is absolutely brilliant and clarified so many things.

  26. Christopher Cliff says:

    If you shake to hard this can dis connect the float linkage but is can be re fitted inside the tank

  27. Bob Cairncross says:

    You haven’t mentioned cleaning the pump for over wintering. If the pump is not sterilised black lumps of sludge can block the pump. Rinse through with Milton is suggested

  28. Graham Uffton says:

    How long does it normally take the blue to dissolve the solid stuff. My one experience was not at all after 12 hours in the tank and found it hard to shake out – it wasnt the best experience. Is the idea if stuff doesnt come out first time, just leave it in there and let it continue to break down?

  29. Sheila Rae says:

    Common sense and as we often stay on a French Aire’s, this is what we do regularly. It is after all, why Motorhome are so convenient.
    We would rather use our own facilities than those on some campsites – particularly in France on many occasions! We know how clean ours are but unfortunately, not all campers are as particular – even without Covid 19

  30. Mrs Susan Hulme says:

    It would be good if you had been a bit more specific about what to use to clean the bowl..but a good article. Ty.

  31. Anne Harris says:

    When using a drinks bottle for chemicals always label. Either what it is or ‘do not drink’ sorry to be pedantic but it’s best to be safe. Best wishes Anne Miller

  32. Wendy Wake says:

    This very true bout cleaning nd maintaining the toilet after we’ve used the toilet in winter we out a small amount of diluted ZOFLORA into the cassette leave hatch open it keeps ur toilet smelling nice always check ur caravan before during the winter if it possible to do so put condensation bags in bathroom toilet kitchen living room u may need bowls or bucket to catch to drops for condensation bag help keep damp nd mould away we use the yellow bags as u can dry them out in ovens or radiatas reuse them there a great produce to buy we out bout 6/8in sliver the caravan

  33. John says:

    Very helpful

  34. Susan Fox says:

    I never use on site facilities i always use our on board toilet and shower, I like my personal privacy and its no problem at all , clean and no smells.

  35. David Vernals says:

    I found this video very helpful and will use the information presented in it on our next trip thank you. I rate this at 4.6.

  36. M McNulty says:

    We used to buy the blue sanitary liquid but it is not cheap. If like us and you empty the cassette between 1-2 days (No:1s only) or immediately after an emergency No:2, this can be expensive, refilling with the required blue. We now use Jangro lemon gel floor cleaner (available in 5 litre bottles) or a very cheap brand of fabric conditioner instead, saving a large amount when touring for over 4 months each year and unlike the blue liquid, they do not contain formaldehyde, and they have never let us down. Also over time, the blue deteriorates the polystyrene float inside the cassette thus disabling the FULL warning light on the toilet.

  37. Steve johnston says:

    Very good. I now no how they work

  38. Janey says:

    I have a campervan & use a porta potty for pee only. How about this for No., 2?
    We use the blue chemical block in it rather than the liquid equivalent as if need to empty & replace it saves us our limited room & weight.

  39. Tribute8515 says:

    really good article, following advice from the well known Diamond Dave ( Dave Newbald ) we now use a Biological cleaning tablet the same as you would use in you washing machine in the cassette as it is biological it aids breakdown of the contents, it’s certainly worth watching Dave’s videos on servicing a toilet cassette in fact he has a few videos on YouTube.

  40. Ken Platt says:

    We have never fully utilised our onboard toilet, but if we must we will. We will be happy just being out in our caravan.

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