What is the Zolvix Plus Challenge?
There is widespread resistance to all older active ingredients, including moxidectin and two-, three- and four-way combinations.¹ Any reduction in drench efficacy has a direct impact on the health and productivity of your sheep throughout the year. Even a mild or moderate reduction in drench efficacy can reduce potential income by 2-10%.² That’s why we’ve created the Zolvix Plus Challenge – if you don’t know the resistance status of the worm population on your farm, you can take steps to find out this season by completing a free DrenchCheck worth $282 as part of the Zolvix Plus Challenge.
How does the Zolvix Plus Challenge work?
Register below before your next Drench. Your local Elanco Territory Manager will then get in touch to discuss your program and explain how to conduct a DrenchCheck.
You’ll receive two Elanco Worm Test kits, each with sample jars, gloves, forms, and a pre-paid Express Post bag.
- Use the first kit to collect samples before drenching.
- Use the second kit to collect samples 10–14 days after drenching.
Send each kit following collection to the lab using the included bags. Once results are in, your Elanco Territory Manager will review them with you and provide recommendations on how to maintain or increase the effectiveness of your drenching program.
What is DrenchCheck?
A DrenchCheck is a simple way to indicate the efficacy of your existing drench against the worm burden in your sheep at the time of testing. A DrenchCheck involves conducting two Worm Egg Count (WEC) tests to determine the reduction in the worm egg count after drenching. The first test is conducted before drenching. The second test is conducted 10-14 days after drenching.
Is there any cost to be involved in the Zolvix Plus Challenge?
Is there any cost to be involved in the Zolvix Plus Challenge?
The DrenchCheck kits are being provided Free of Charge. The aim of the Zolvix Plus Challenge is to encourage sheep producers to test the efficacy of a drench in their current drench program – no matter what drenches are being used.
How to take part in the Zolvix Plus Challenge
Register Here for the Zolvix Plus Challenge
Is your current drench really working? Take the challenge to find out!
Zolvix Plus Challenge FAQ's
Good agricultural practice is essential for optimal worm control. Resistance may develop to any chemical. Ask your local veterinary practitioner or animal health advisor for recommended parasite management practices for your area to reduce development of resistance. It is advisable that a resistance test be conducted before any parasite treatment is used. Use in accordance with the registered label directions and regional drench decision guidelines (www.wormboss.com.au).
References: 1. Playford, M.C. et al. (2014). Prevalence and severity of anthelmintic resistance in ovine gastrointestinal nematodes in Australia (2009-2012. Aust Vet J 92(12):464-471. 2. Besier, R.B., et al. (1996). Drench resistance – a large economic cost. J. Agric. West. Aust. 37:60-63.
Samples must be collected from sheep. Conditions apply, click here for full terms and conditions. Open to AU res 18+ who are farmers or farm managers and manage a farm entity with at least 2000 sheep. Starts 01/01/24. Ends: 11:59PM ADST on 31/12/24 or once stock of kits is exhausted, whichever is first. Kits are subject to availability within each region. Limit 1 claim per farm entity.
Zolvix Plus contains 25g/L monepantel and 2g/L abamectin. Zolvix™ , Elanco and the diagonal bar logo are trademarks of Elanco or its affiliates. ©2025 Elanco or its affiliates. PM-AU-24-0308
