Feeding Applications:
For beef and dairy cattle and horses on pasture. Contains Rabon Oral Larvicide to prevent the development of horn flies, face flies, house flies and stable flies in the manure of treated animals.

Rolyx® Max

Product Features

CRYSTALYX Rolyx Max contains Rabon, the proven-effective oral larvicide, to prevent the development of Horn flies, Face Flies, House Flies and Stable Flies in the manure of treated animals.

CRYSTALYX Rolyx Max contains chelated/organic trace minerals.

Give your livestock around-the-clock fly protection and supplemental nutrition.

Rabon® is a registered trademark of Bayer Animal Health.

Feeding Instructions


Place ROLYX Max containers in dry spots near loafing areas and watering areas. Feed at the rate of one container for every 20-30 head with a minimum of 2 containers. Provide free access to clean, fresh water at all times. ROLYX Max contains no salt. Provide salt free choice. Animals should not be starved for mineral prior to feeding ROLYX Max.

Cattle or horses should consume 0.68 pounds per 100 pounds of body weight per month, reduce the number of feeding locations or relocate the containers. If consumption below 0.68 pounds per 100 pounds of body weight per month, increase the number of feeding locations.
Start feeding ROLYX Max early in the spring before the flies begin to appear, and continue feeding throughout the summer and into the fall until cold weather restricts fly activity. ROLYX Max prevents the development of horn flies, face flies, house flies and stable flies in the manure of treated cattle and prevents development of house and stable flies in the manure of treated horses but is not effective against existing adult flies. When starting a feeding program during the fly season, it is desirable to use other control measure to reduce the population of existing adult flies. ROLYX Max may be fed to cattle up until slaughter and to lactating cows. Follow feeding directions.

*Each pound contains 3.1g Rabon
**Refers only to ingredients which are not larvicidal

Environmental Hazards: This compound is toxic to fish.
Storage and Disposal
Do not contaminate water, food or feed by storage or disposal.
Store product in a cool, dry warehouse in the original container.
Container Handling: Refillable container. Refill this container with this product only. Do not reuse this container for any other purpose. Return empty containers for cleaning and recycling or dispose of empty containers in a sanitary landfill or by other procedures approved by state and local authorities.
Harmful if swallowed or absorbed through the skin. Causes moderate eye irritation. Avoid contact with eyes, skin or clothing. Prolonged or frequently repeated skin contact may cause allergic reaction in some individuals. Personal Protective Equipment (PPE): long-sleeved shirt and long pants, shoes and socks, chemical resistant gloves. Wash hands before eating, drinking, chewing gum, using tobacco or using the toilet. Follow manufacturers instructions for cleaning/maintaining PPE. If no such instructions for washables, use detergent and hot water. Keep and wash PPE separately for other laundry.

It is a violation of Federal Law to use this product in a manner inconsistent with its labeling.

Precautions for Horse Use: This product contains tetrachlorvinphos, which is a cholinesterase inhibitor. The most frequently reported clinical signs of cholinesterase inhibition in the horse are abdominal pain, lethargy, sweating, tearing and excessive salivation. If the signs are seen in horses, consult your veterinarian immediately. Do not use this product simultaneously or within a week before or after treatment with cholinesterase inhibiting drugs, pesticides or chemicals. Consult a veterinarian before using this product on debilitates, aged, pregnant or nursing animals. This product has not been tested in breeding horses.

WARNING: This product, which contains added copper, should not be fed to sheep or any species with a low tolerance to supplemental copper.

Consumption of selenium should not exceed 3 mg per head daily.

Nutrition Information

Crude Fat, Min3.00%
Crude Fiber, Max3.00%
Acid Detergent Fiber, Max2.00%
Calcium, Min5.00%
Calcium, Max6.00%
Phosphorus, Min5.00%
Salt, MinNone Added
Magnesium, Min5.00%
Cobalt, Min30 ppm
Copper, Min1,000 ppm
Iodine, Min50 ppm
Manganese, Min4,000 ppm
Selenium, Min13.2 ppm
Zinc, Min3,000 ppm
Vitamin A, Min100,000 IU/lb
Vitamin D-3, Min10,000 IU/lb
Vitamin E, Min100 IU/lb

Product Ingredients

Molasses products, monocalcium phosphate, dicalcium phosphate, magnesium oxide, calcium carbonate, hydrolyzed vegetable oil, manganese proteinate, manganous oxide, manganese sulfate, zinc proteinate, zinc oxide, zinc sulfate, copper proteinate, copper sulfate, selenium yeast, brewer's dried yeast, ethylenediamine dihydroiodide, calcium iodate, cobalt proteinate, cobalt carbonate, vitamin A supplement, vitamin D-3 supplement, vitamin E supplement, mineral oil.

Active Drug Ingredients(s):  
Tetrachlorvinphos........................ 0.68%
Inert Ingredients......................... 99.32%**

Purpose Statement:
Contains Rabon® to prevent the development of horn flies, face flies, house flies and stable flies in the manure of treated cattle. Prevents development of house flies and stable flies in the manure of treated horses.