Numnuts blocks the acute pain that follows tail docking and castration of lambs with rubber rings. It’s an easy to use ring applicator, combined with an injector that dispenses local anaesthetic. Recommended for lambs aged up to 12 weeks.
Developed with Moredun Research Institute, and validated by international animal health and welfare research organisations, Numnuts provides lambs with the best start in life and helps sheep farmers achieve industry best practice by adopting an ethical, sustainable approach to castration and de-tailing.
Numnuts blocks the acute pain that follows tail docking and castration of lambs with rubber rings. It’s an easy to use ring applicator, combined with an injector that dispenses local anaesthetic.
Developed with Moredun Research Institute, and validated by international animal health and welfare research organisations, Numnuts provides lambs with the best start in life and helps sheep farmers achieve industry best practice by adopting an ethical, sustainable approach to castration and de-tailing.
Worldwide, more than 100 million lambs are castrated and tail docked each year without pain relief. Numnuts’ patented technology is a practical, farmer-friendly method for alleviating the pain suffered when lambs go through these husbandry procedures.
Pain relief is injected at the same time as ring application to the tail or testes, providing targeted pain relief that kicks in almost immediately.
Numnuts is entirely unique. No other device exists that allows farmers to provide targeted pain relief to lambs during tail docking and castration.

Numnuts was launched in Australia in 2019, after 10 years of research & development, via an international collaboration between welfare scientists at at Australia’s national scientific research organisation (CSIRO) and Moredun Research Institute in Scotland, in combination with product design engineers 4c Design. Numnuts has been available in Australia since 2019, New Zealand since 2021 and is now available to farmers in the UK, subject to local regulations.
Since its launch, Numnuts has been used by hundreds of pioneering sheep farmers and vets, with over 3 million doses of anaesthetic administered so far.





“It was the highlight of our year at Aloeburn Poll to work with the team at Numnuts. We are constantly looking to increase all aspects of animal welfare and lift the productivity of our efficient, productive Poll Merinos.”
Jodie Green
Owner of Aloeburn Poll Merinos & Numnuts Pioneer
“Cheers for making sheep husbandry better! Love how much easier it is to release the green ring on small testicles without losing them!”

Emily Stretch Farmer
“Got to use our new Numnuts Device today. Super easy, kids got the hang of it straight away & were very curious. Good discussion on the use of pain relief in husbandry operations. Taught them on a bunch of bananas like the manual says, which they found amusing!”

Ellie Quinn Agriculture Teacher
“It’s an awesome system and it’s been great to have it available to ensure we can do necessary husbandry practices with minimal pain.”

Rebecca McLellan Farmer
“Afternoon #lambmarking today, glad to have @NumnutsDevice and #numOcaine for pain relief on tails and testes. Happy lambs returning straight to mum after the cradle, then walking easily back to their paddock for some hay before dark”

Hannah Gordon Apprentice Mixed Farmer
“We were asked to trial the numnuts lamb bander. I’m not going to lie and I thought it looked a bit cumbersome when I first seen it. Glad to say it’s really easy to use and very effective at reducing any stress levels. I’ll certainly be using it again in the future.”

Joyce Campbell Farmer
“Today we used “NUMNUTS” for the first time. It is a pain relief for castration. We are happy with the results so far. The lambs showed very little to no signs of pain or stress and walked back to the paddock as if nothing had happened only 5 minutes after marking.”

Allister Morris Sheep Producer
“Now that we are using Numnuts for castration at lamb marking, the wether lambs are up and about as quickly as the ewe lambs. It is a great addition to the other pain relief products now available for lambs and I wouldn’t castrate lambs without it.”

Elizabeth Tierney Farmer
“Happy with the simple and effective numnuts product.”

Jenny BradleyFarmer
“Moving lambs back to paddocks is easier when using numnuts at lamb marking.”

Mount Hesse Farm VIC, Australia
“We love using our Numnuts system and starting to hear more people talking about it, which is great. Our vet even uses it now, thanks for a great product.”

Louise Findlay-CooperFarmer | Ora Cooper Farms
“Blood free for 25 years and now we have pain relief with numnuts. We can YouTube the whole process with excellent animal and production outcomes… Rings and pain relief = best community, animal and production outcomes.”
Tim Leeming
Owner of Paradoo Prime