Your online orders cannot currently be placed through your PGW Customer Account Web login. Please contact our online support team for more information.

Cyrex™ Liquid for Sheep

Cyrex Liquid for sheep effectively controls flies, maggots and lice in sheep. Contains the active ingredients cyromazine and spinosad to actively control and treat blowfly strike for up to 12 weeks and lice on fine wool (merino) and coarse wool breeds.

Read more
From $129.00 From $129.00
availability map Available Nationwide

Dispatch Options

Delivery Not Available
Click and Collect In Store Available


In Selected Stores and Online
Online Only

Shipping Rates

Online orders can be delivered straight to your farm, orchard, lifestyle block or residential house across New Zealand. Note that at this stage, we do not offer international deliveries or deliveries to the Chatham Islands, Great Barrier Island, Stewart Island or Waiheke Island.

All orders that can fit into one standard courier parcel that is 25kg or less and 0.125mᶟ. $9.00
All orders that can fit into two to three standard courier parcels that equal less than 50kg in total. $15.00
All orders that are 50 to 100kg and cannot fit into less than three standard courier parcels. $50.00
All orders that are more than 100kg in total and cannot fit into less than three standard courier parcels. $100.00

Exclusions apply. Read the full delivery policy here.

Easy Returns

Products ordered online can be returned within 30 working days of taking delivery of the products, provided they meet our return conditions. The goods can be either refunded, replaced or exchanged.

There are three effortless ways to process a return:

  • Processing a return online: Sign into your PGG Wrightson Web Account and look for "Returns" on your left menu and follow the steps.
  • Returning a product in store: Head into your local PGG Wrightson store with your packaged product and your online order reference (in print or electronic version).
  • Contacting our customer service team: Ring 0800 10 22 76 and our customer service team will take you through the steps to return the product to us.

All our return conditions are set in the PGW Terms of Sale / Trade. Exclusions apply. 

Friendly Support

Our friendly customer service team is always ready to help you. We have multiple communication channels to ensure a quality responsive service.

You can contact our customer service team at any time through the following channels:

Support Hours, Monday - Friday: 8 AM to 5 PM

Secure Payment

All credit and debit card transactions are fully managed through a dedicated payment gateway hosted by Windcave. At the time of a purchase, your card details are sent directly to Windcave, who offer full end-to-end encryption. This technology is designed by Windcave to prevent any unauthorised viewing and downloading of your payment information. At no point does PGG Wrightson has access to, or store any of your credit or debit card information.

For further information on payment and security on the PGG Wrightson online store, please see our Terms of Sale, Privacy Policy or FAQs.

SKU#: PID00594

Cyrex Liquid protects sheep from blowfly for up to 12 weeks and lice on wool strains that are resistant to synthetic pyrethroids. The withholding period for milk is 35 days and meat is 7 days. For wool, ensure the time between dipping and subsequent shearing is at least two months, except in the case of spot treatment for fly strike.

  • Two proven active ingredients: 12.5 g per L of spinosad and 500 g per L of cyromazine. Spinosad provides knockdown control of blowflies, maggot and lice while cyromazine provides up to 12 weeks protection against blowfly strike
  • Safe for operators and sheep
  • No known resistance in New Zealand to the active ingredients
  • Apply through jetting, shower dip or flystrike dressing before flystrike is detected, ideally docking or weaning
  • To control lice, apply in autumn
  • Both active ingredients have favourable environmental safety profiles

Knowledge Hub