Numnuts® blocks the acute pain that follows tail docking and castration of lambs with rubber rings. Numnuts is a 2-in-1 device that administers an Elastrator® ring along with a pre-calibrated dose of local anaesthetic. Easy, fast and safe, it provides fast-acting targeted pain relief for castration and tail docking of lambs. Recommended for lambs aged 4 – 12 weeks.
Numnuts is entirely unique – no other device exists that allows farmers to provide targeted pain relief to lambs during tail docking & castration.
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 a Scottish-designed and developed product that has been used reliably by thousands of pioneering sheep farmers and vets, administering over 3 million doses in Australia and New Zealand. 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 accurately injects a 1.5ml dose where the local anaesthetic will be most effective in alleviating pain for up to 60 minutes after injection. This innovative method minimises the pain and distress typically associated with traditional rubber ringing procedures.
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