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Y-Tek PYthon Insecticide Cattle Ear Tags

This page contains information on Y-Tek PYthon Insecticide Cattle Ear Tags for veterinary use.
The information provided typically includes the following:
  • Y-Tek PYthon Insecticide Cattle Ear Tags Indications
  • Warnings and cautions for Y-Tek PYthon Insecticide Cattle Ear Tags
  • Direction and dosage information for Y-Tek PYthon Insecticide Cattle Ear Tags

Y-tek Python Insecticide Cattle Ear Tags

This treatment applies to the following species:
Manufacturer: Y-Tex

For use on Beef and Dairy Cattle (including Lactating) and Calves to Control Horn Flies, Face Flies, Lice, Gulf Coast Ticks, Spinose Ear Ticks, and Aid in Control of Stable Flies, Black Flies, House Flies and small Horse Flies.

Keep Out Of Reach Of Children

Y-Tek PYthon Insecticide Cattle Ear Tags Caution

See Below For Additional Precautionary Statements.

Active Ingredients

Zetacypermethrin, S-enantiomer
s-cyano (3-phenoxyphenyl) Methyl (±) Cis/trans 3-(2, 2-dichloroethenyl)-2, 2 Dimethylcyclopropane-carboxylate*


*cis/trans Isomer Ratio: Max. 55% (±) Cis And Min. 45% (±) Trans

piperonyl Butoxide, Technical
min. 80% (butylcarbityl) (6-propylpiperonyl) Ether And Max. 20% Related Compounds


inert Ingredients




- Synergized Pyrethroid Formula For Maximum Effectiveness Against Horn Flies.

- Also Controls Face Flies, Lice, Ear Ticks, And Aids In Control Of Other Biting Flies.

- Can Be Used On Lactating Dairy Cows.

- No Withdrawal Time Required.

- Guaranteed Against Loss Due To Tag Or Button Failure.*

snap-lok™ Collar For Guaranteed Retention* (u.s. Patent No. 4,581,834)

long Taper And Rounded Edges For Durability

ribbed Design For Season-long Durability

large Surface Area For Insecticide Effectiveness


*This guarantee is a limited guarantee, limited to the replacement of tags only, if the tags failed after being properly applied, to remain in the animal’s ear for a five (5) month period due to tag breakage or separation from button.

Directions For Use

It is a violation of Federal law to use this product in a manner inconsistent with its labeling. This labeling must be in the possession of the user at the time of pesticide application.

Summer Season: To control horn flies for about 3-4 months and aid in control of face flies, apply 1 tag per animal in late spring. To control horn flies, face flies, lice, Gulf Coast ticks and spinose ear ticks for 4-5 months, and to aid in control of stable flies, black flies, house flies and small horse flies, apply two tags per animal (1 in each ear) when flies appear in spring. Apply 2 tags to large bulls for optimum horn fly protection.

Winter Season: For season-long lice control, apply tags in late fall. To control biting lice, shortnosed sucking lice and aid in control of other sucking lice, apply 1 tag per calf or 2 tags per mature animal (1 in each ear).

Apply as shown with the Y-TEX 2-piece tagging system. All animals in the herd should be tagged. To minimize development of insecticide resistance, remove used tags at end of fly and lice seasons, and follow Y-TEX's recommended tag rotation program.

Step 1

Seat male button firmly on pin, press down and give a slight twist.

Step 2

Place female tag firmly under clip. Collar on tag must be pointing away from pin.

Step 3

Position applicator over ear and squeeze the handles together.

The ideal position for male stud is between the second and third radial cartilage as shown.

Storage And Disposal

Store in a cool place in original container. Opened bags containing ear tags should be resealed for storage. Do not contaminate water, food or feed by storage or disposal.


Store in cool place away from direct sunlight.

Pesticide Disposal

Remove tags before slaughter. Securely wrap used tags in a plastic bag or several layers of newspaper and discard in trash.

Container Disposal

Do not reuse bag. Discard bag in trash.

First Aid

This product contains zetacypermethrin, a pyrethroid insecticide, and piperonyl butoxide, technical, a mixed-function oxidase inhibitor.

If on skin - Rinse skin immediately with plenty of water for 15-20 minutes. Call a poison control center or doctor for treatment advice.

If in eyes - Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye. Call a poison control center or doctor for treatment advice.

If inhaled - Move person to fresh air. If person is not breathing, call 911 or an ambulance, then give artificial respiration, preferably mouth to mouth, if possible. Call a poison control center or doctor for treatment advice.

If swallowed - Call a poison control center or doctor immediately for treatment advice. Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by a poison control center or doctor. Do not give anything by mouth to an unconscious person.

Hot Line Number

Have the product container or label with you when calling a poison control center or doctor, or going for treatment. You may also contact 1-800-255-3924 for emergency medical treatment information.

Precautionary Statements

Hazards To Humans

Y-Tek PYthon Insecticide Cattle Ear Tags Caution

May be harmful if swallowed or absorbed through the skin. Avoid contact with skin, eyes or clothing.Wear rubber or non-permeable protective gloves when applying tags. Wash thoroughly with soap and water after handling.

Notice Of Warranty

Y-TEX CORPORATION MAKES NO WARRANTY OF MERCHANTABILITY, FITNESS FOR ANY PURPOSE, OR OTHERWISE, EXPRESSED OR IMPLIED concerning this product or its uses which extend beyond the use of the product under normal conditions in accord with the statements made on this label, and in any case, is limited to replacement of tags only.

Environmental Hazards

This pesticide is toxic to fish and aquatic invertebrates. Do not contaminate water by disposal of used tags. Use this product only as specified on this label.

EPA EST. NO. 39039-WY-01

EPA REG. NO. 39039-4

Y-tex Corporation, 1825 Big Horn Avenue, Cody, Wyoming 82414











Nac No.

1825 BIG HORN AVENUE, P.O. BOX 1450, CODY, WY, 82414
Telephone:   800-443-6401
Every effort has been made to ensure the accuracy of the Y-Tek PYthon Insecticide Cattle Ear Tags information published above. However, it remains the responsibility of the readers to familiarize themselves with the product information contained on the Y-Tek PYthon Insecticide Cattle Ear Tags product label or package insert.

Copyright © 2018 North American Compendiums. Updated: 2018-04-26