top of page
PYthon ear tag box of 100. Aids in the control of ticks on the body of deer and cattle for at least 6 weeks.

Controls New Zealand cattle tick on deer and cattle, and nuisance fly including stable fly  and common house fly on cattle older than 6 months of age.


PYthon ear tags contains a new synergised S-isomer pyrethroid compound. PYthon's exclusive Tri-Polymer matrix of non-toxic inert constituents continuously deliver a high ratio of synergist to insecticides for maximium insect killing action. PYthon's net weight of 9.5gms allows it to be used on deer and cattle of all ages. This insecticide is spread into the oils of the coat by the grooming of the animal and kills the ticks by contact.


Aids on the control of ticks

  • on the body of deer and cattle for at least 6 weeks.
  • on the head and neck of deer, including velvet antler on stags for up to 16 weeks
  • on fawns aged up six weeks when these are run with Python Ear Tag treated hinds, to at least 6 weeks of age.

Aids in the control of nuisance flies including Stable Fly (Stomoxys calcitrans) and Common House fly (Musca domestica)

  • for up to 12 weeks on cattle older than 6 months of age (including beef and lactating dairy cows).

Calves aged less than 6 months and fawns aged less than 9 months: 1 tag in 1 ear only.
Cattle older than 6 months and deer older than 9 months: 2 tags, 1 in each ear.


Apply a PYthon Ear Tag to each ear of the animal using a Y-Tex PYthon ear tag applicator. Preferably apply so that the tag panel is on the back of the ear and the button is on the front. Treat all animals on the herd. Use one tag in one ear only for deer less than 9 months and calves less than 6 months of age. 


Recommended to apply ear tags at the first sign of ticks infesting stock - good control of early stages can reduce pasture infestation later in the tick season.


To minimise the opportunity for the development of resistance, remove the tags at the end of the payout period (20 weeks after insertion). 

Special Precautions: 
May be harmful if swallowed, or absorbed through the skin. May cause mild skin and eye irritation. Avoid skin or eye contact and avoid breathing vapour. Repeated exposure to cypermethrin may cause skin allergy. Cypermethrin may possibly affect development and/or reproduction and may affect the gastrointestinal tract. Wear rubber or non-permeable gloves when applying tags. Do not smoke or eat while handling the product. Wash hands and exposed skin before meals and after use. Avoid contamination of food or foodstuffs. 

Withholding Times: 
MEAT: Nil.
MILK: Nil.

Velvet (Deer): Velvet for human food should not be harvested within 28 days of application of PYthon Ear Tags.

Human First Aid, Symptoms Of Poisoning: 
If rubbed in eyes, flush with water. If swallowed or if eye irritation persists, seek medical attention without delay. In an emergency, contact the National Poisons Centre (0800 POISON or 0800 764 766) immediately.

Other Information: 
Store below 30°C (room temperature).

Store in original container in a dry, cool place.

Safety Data Sheet available upon request

PYthon Ear tags

  • A fast acting, sustained-release ear tag

    • controls New Zealand cattle tick on deer and cattle 
    • controls Nuisance Fly on cattle


    Zeta-cypermethrin 100mg/g and piperonyl butoxide 200mg/g


    Each tag weighs 9.5g and is provided in boxes of 100.



    Available from your farm supply store or veterinarian


    Product codes:

    • 100 tag box YT001
    • Ultratagger Applicator YT003
    • Removal knife YT005

    Registered pursuant to the ACVM Act 1997 No. A9151

bottom of page