Bio Drain Blocks – Pack of 5 by Separett for Villa, Weekend, Privy and Tiny

SKU SEP1118-01 Categories , , Tag

£15.00 excl. VAT

Separett Eco Urinal Blocks are designed for use in compost toilets. The natural enzymes break down the urine and help eliminate unwelcome odours.


In stock


Part code: 1118-01

Separett Bio Drain Blocks (aka Eco Urinal Blocks) are an eco-friendly way of keeping your urine-diverting toilet clean and fresh, without the use of harmful chemicals.

Containing natural enzymes, they help break down urine crystals that can build up in the pipes, causing them to block over time. They are also helpful in minimising urine odours and maintaining hygiene.

Unlike some brands of commercially available urinal blocks, Separett’s Bio Drain Blocks don’t contain PdCB and are completely safe for the environment and humans (see safety notes below).


Please Note! We recommend rinsing the urine basin with a small cup of water after each visit, it keeps the toilet fresh and lets the enzymes from the Bio Drain Cleaner rinse properly through the urine waste pipe.


Keep the tablets from children and use only in urine-diverting toilets or urine toilets. If eaten: Drink a lot of milk or water. If contact with eyes: Rinse the eye for 10-15 minutes If contact with skin: Rinse and wash with soap.

How it works

Place the Eco Urinal Blocks in the urine bowl on your urine-diverting toilet. The tablet contains biological material that prevents the urine and salts in the urine from clogging the pipes.

Longtime storage

Store the tablets above the freezing point and not accessible by children.

51 reviews for Bio Drain Blocks – Pack of 5 by Separett for Villa, Weekend, Privy and Tiny

  1. Kate Tuck

  2. Lucy


  3. George

    Very good

  4. Tom


  5. Zuzana Vojackova ( Appleseed)


  6. David Crowder


  7. Anonymous

  8. Evan

  9. Anonymous

    They do what the description says they will and work well.

  10. Stuart

    they work very well and I’m quite pleased with the product although they are slightly overpriced…

  11. Marcus

    Work fine. We’re happy with them.

  12. Ron

    A fine product, does exactly what it’s supposed to do.

  13. Timothy

    We use them all the time, they’re great.

  14. Nigel

  15. Lorna Howarth (verified owner)

    The product works successfully and does exactly what the description on the website says it does. It breaks down at the end of its lifetime, however it isn’t much of a problem as it can simply be replaced.

  16. Robert Pittman

    It’s really good, and they’re the only thing that works

  17. Susan G. (verified owner)

    Very strong smelling in their packaging.

  18. Garry C. (verified owner)

    I like the smell of this product. Not sure if I could use an alternative block. Will do some research.

  19. Brian (verified owner)

    Fast service – a little pricy but only need small amount.

  20. David Burrill (verified owner)

    I find The service from WooWoo Waterless toilets staff excellent.

  21. Julie Vallance (verified owner)

    Urinal blocks missing from package

    • Martin Doyle (store manager)

      We’re so sorry we missed this from your order – human error I’m afraid! As per our response email, we’ve dispatched the missing items and hope you can review them once you’ve had a chance to try them out.

  22. Dave W. (verified owner)

  23. Kathryn Matheson (verified owner)

    Not used yet

  24. Jane (verified owner)

  25. Sandy Green (verified owner)

    All good and delivered to time

  26. Alasdair M. (verified owner)

    dont seem to have same fragrance as previously ordered

    • Martin Doyle (store manager)

      We’ve not heard that before – thanks for letting us know! Some people have commented that the odour was quite strong (although not unpleasant), so perhaps Separett has reformulated them. We’ll check with the manufacturer! The main job of the Bio Drain blocks is to release an enzyme which helps prevent urine from scaling up the pipes and that part is still the same.

  27. Anonymous (verified owner)

  28. Antony Doidge (verified owner)

  29. Magda (verified owner)

    It actually works and reduces the smell. The tablets are smaller in reality than appear on the picture

  30. Chris Durant (verified owner)

    Excellent, prompt and helpful service, thanks

  31. Karen O. (verified owner)

    We have used these with our separett toilet for about 5 years now. They are brilliant at stopping blockages from the salts build up in the urinal part and stop any unwanted smells too.

  32. Chris Durant (verified owner)

    Excellent service, prompt delivery and very helpful

  33. Anonymous (verified owner)

    Not opened yet. Bought pack as individual block supplied initially was used up having worked well especially as temporary medication at the time created stronger urine. Bought pack for future situation.

  34. Tim S. (verified owner)

  35. Colin S. (verified owner)

    Nice to deal with always prompt service nice products

  36. Andrew White (verified owner)

  37. Anonymous (verified owner)

  38. Susan (verified owner)

  39. Lorraine B. (verified owner)

    They do a great job

  40. Dennis (verified owner)

  41. Lorraine Barlow (verified owner)

    Great blocks long lasting

  42. Iain C. (verified owner)

    Great service once more. Will use again.

  43. Anonymous (verified owner)

  44. Anonymous (verified owner)

  45. Geoff Eggleston (verified owner)

  46. Chris Durant (verified owner)

    Amazing shopping with you guys as usual, thanks, prompt and helpful, couldn’t ask for more

  47. Verified Buyer (verified owner)

    Always excellent. From simple orders of accessories or consumable products to after sales customer service on the loo’s themselves – WooWoo have always done a superb job.

  48. Verified Buyer (verified owner)

  49. Lynda e. (verified owner)

  50. Richard Kitson (verified owner)

  51. MALCOLM H. (verified owner)

    Just as ordered for my new composting toilet.

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