Merck Animal Health
Safe-Guard® Cattle Rebate

The Parasite Control You Trust—Now with a 10% Rebate

Save now with a 10% rebate offer on SAFE-GUARD® (fenbendazole) Oral Suspension and PANACUR® (fenbendazole) Oral Suspension dewormer for cattle.

Promotion period is August 1, 2026 through November 30, 2026. Eligibility restrictions apply.
Minimum rebate payout required is $5. Maximum rebate payout per household is $5,000.
See Terms and Conditions for complete details.

Redeem your rebate online

Purchase qualifying products.
Go to MAHCattle.ACBOffers.com to create an account and fill in all information fields.
Submissions must be received by December 31, 2026.

GET STARTED

Redeem your rebate by mail

Print rebate form and complete all fields with your information. 
Enclose itemized receipts reflecting product purchases and prices. Important: Keep copies of all materials submitted for your own records.
Mail this completed form and itemized receipts to: Merck Animal Health Rebate Offer, PO Box 1919, Memphis, TN 38101.
Submissions must be received by December 31, 2026.

SAFE-GUARD is backed by decades of research and has been trusted by cattle producers for over 40 years. It’s clear to see why:

SAFE-GUARD formulations provide an average efficacy of 91-98.7%,¹ delivering a strong return on investment. SAFE-GUARD features broad-spectrum activity against internal parasites and quickly reduces egg shedding and pasture contamination.

Merck Animal Health maintains the world’s largest database of fecal egg count reduction test (FECRT) results to monitor the field efficacy of dewormers and provides free FECRT kits to customers to ensure your deworming program is working.

As the innovators that brought fenbendazole to market, Merck Animal Health is committed to ongoing research and development to equip cattle producers with effective solutions and mitigate resistance.

Frequently Asked Questions

What products are eligible for this rebate offer from Merck Animal Health?

Any size of SAFE-GUARD (fenbendazole) Oral Suspension and PANACUR (fenbendazole) Suspension dewormer for cattle.

Who is eligible for the rebate promotion?

This offer is only valid for producers who currently are not enrolled in the OneMerck Producer program. Resellers, distributors, OneMerck Champion customers, and customers enrolled in the OneMerck Producer Program, OneMerck Vet Program, or OneMerck Dealer Program are not eligible to redeem this offer.

When does the rebate offer end?

Qualifying purchases must be made between August 1, 2026 and November 30, 2026. All submissions must be received by Merck Animal Health no later than December 31, 2026.

How do I apply for the Merck Animal Health rebate?

Submit your information at MAHCattle.ACBOffers.com or follow the mail-in instructions above.

How do I choose the right dewormer schedule for my cattle?

Develop a schedule based on your operation type, location, parasite pressure and preferred delivery method. Treatment schedule.
Consult your veterinarian for assistance in the diagnosis, treatment and control of parasitism.

How do I know how much dewormer to give?

Determining dosage depends on which SAFE-GUARD product you are using. For easy calculations, use our dosage calculator to figure your dose and product needs customized for your herd size. Dosage Calculator.

How do I use SAFE-GUARD Oral Suspension?

Administer orally. The recommended dose of 2.3 mg/lb (5 mg/kg) of body weight is achieved when 2.3 mL of the drug are given for each 100 lb body weight.

How do I use PANACUR Suspension?

PANACUR is available by prescription only. Administer orally by suitable dosing syringe. Insert nozzle of syringe through the interdental space and deposit the drug on the back of the tongue by depressing the plunger. The drug may also be administered by stomach tube.

What parasites do SAFE-GUARD or PANACUR work on?

SAFE-GUARD is proven effective for removal and control of some of the most performance-robbing parasites in cattle, including BANKRUPT WORM (T. colubriformis), BARBER’S POLE WORM (Haemonchus spp.), BROWN STOMACH WORM (Ostertagia ostertagi), HOOKWORM (Bunostomum phlebotomum), LUNGWORM (Dictyocaulus viviparus), NODULAR WORMS (Oesophagostomum radiatum), SMALL INTESTINE WORM (Cooperia punctata, C. oncophora), SMALL STOMACH WORM (Trichostrongylus axei) and THREAD-NECKED WORM (Nematodirus helvetianus).

What is fenbendazole?

Fenbendazole is the molecule used in SAFE-GUARD and PANACUR and is known for its broad-spectrum, fast-acting ability to kill parasites. It is part of the benzimidazole class, making it a powerful option amid growing resistance to pour-on and injectable dewormers.

How does fenbendazole work?

Fenbendazole, the active ingredient in SAFE-GUARD and PANACUR from Merck Animal Health, is absorbed in the gut to kill parasites where they live.

How do I know my deworming program is working?

No matter your cattle deworming schedule, a fecal egg count reduction test (FECRT) helps measure how well your program is working. Learn more about FECRTs and step-by-step instructions to get an accurate read here.

What is FECRT?

The Fecal Egg Count Reduction Test, or FECRT, is a diagnostic tool that can tell just how well your deworming program is working.

What research supports SAFE-GUARD dewormer efficacy?

SAFE-GUARD is backed by decades of research. View studies and results here.

Terms and Conditions:

10% rebate on SAFE-GUARD® (fenbendazole) Oral Suspension and PANACUR® (fenbendazole) Oral Suspension dewormer for cattle offer valid for purchases made between August 1, 2026 and November 30, 2026 (“Program Period”). Minimum rebate payment amount is $5.00. Rebates will be fulfilled via Merck Visa® Prepaid Card. To receive your rebate, all fields must be completed online or via mail-in rebate form. All submissions must be received by Merck Animal Health by December 31, 2026. An itemized proof of purchase receipt including product name, size and price must be submitted. Not valid with any other offer. This offer is only valid for producers who currently are not enrolled in the OneMerck Producer Program. Resellers, distributors, OneMerck Champion customers, and customers enrolled in the OneMerck Producer Program, OneMerck Vet Program, or OneMerck Dealer Program are not eligible to redeem this offer. For more information regarding this offer, contact your Merck Animal Health representative or your Merck Animal Health authorized distributor representative. Merck Animal Health reserves the right to change or cancel this offer at any time without prior notice. Multiple submissions per household are permitted through the duration of the Program Period up to a maximum payout of $5,000 per household. Fraudulent submission could result in federal prosecution under mail fraud statutes (Title 18, Sections 1341 & 1342). Use of multiple addresses to obtain additional rebates may constitute fraud and may result in prosecution.

Reproduction, purchase, sale, or trade of rebate forms, proofs of purchase, and cash register receipts are prohibited. Merck Animal Health reserves the right to decline submissions for purchases from unauthorized distributors. Resellers (veterinarians, dealers or online retailers) and Distributors are not allowed to submit on behalf of Producer. Void where prohibited by law. Card is issued by Pathward, N.A., Member FDIC, pursuant to a license from Visa U.S.A. Inc. No cash access or recurring payments. Can be used at select merchants that accept Visa debit cards online or phone/mail orders, see MyPrepaidCenter.com/page/visa-persona-virtual. Card valid for up to 6 months, funds do not expire and may be available after card expiration date. Fees may apply. Terms and conditions apply. Please allow up to eight weeks for delivery of the rebate. For rebate inquiries, call 844-980-2200 or visit MAHCattle.ACBOffers.com. 

References

Merck Animal Health National FECRT Database.
Data on file. Merck Animal Health. Technical Bulletin, Deworming with SAFE-GUARD® Suspension and Cydectin® Pour-On with or without Strategic Deworming with SAFE-GUARD® 0.5% Alfalfa-Based Pellets. 2024. US-SFG-231000009.
J. S. Schutz, J. A. Carroll, L. C. Gasbarre, T. A. Shelton, S. T. Nordstrom, J. P. Hutcheson, H. Van Campen, T. E. Engle. Effects of gastrointestinal parasites on parasite burden, rectal temperature, and antibody titer responses to vaccination and infectious bovine rhinotracheitis virus challenge. J. Anim. Sci. June 2012. 90(6)1948-1954.
Kvasnicka, WG, et al. Fenbendazole in a strategic deworming program. The Compendium. Food Ani. Parasit. 1996;18(4)113-117.
Wholgemuth, KM, et al. Deworming Beef Cow and Calves with Fenbendazole: Effect on Weaning Weight of Calves. North Dakota Farm Research Bimonthly Bulletin. 1990;48(4)27-30.
HRVET Study GHM/19. Cow/calf producers in the Northern Plains have wondered if parasite control can pay for itself. 1990.
Hoechst-Roussel Agri-Vet Company. Study Number A640468.
Hoechst-Roussel Agri-Vet Company. Study Number A640438.
Hoechst-Roussel Agri-Vet Company. Study Number A640039.
Keith, EA. Utilizing Feed Grade Formulations of Fenbendazole for Cattle. Agri-Prac. 1992;13(1)17.

SAFE-GUARD Important Safety Information

Do not use in beef calves less than 2 months old, dairy calves and veal calves. A withdrawal period has not been established for this product in pre-ruminating calves. Additionally, the following meat withdrawal and milk discard times apply:

Safe-Guard Paste: Cattle must not be slaughtered for 8 days. For dairy cattle, the milk discard time is 96 hours.
Safe-Guard Suspension: Cattle must not be slaughtered for 8 days. For dairy cattle, the milk discard time is 48 hours.
Safe-Guard EnProAl Type C Medicated Block: Cattle must not be slaughtered for 11 days. For use in beef cattle only.
Safe-Guard 20% Protein Type C Medicated Block: Cattle must not be slaughtered for 16 days. For use in beef cattle only.
Safe-Guard Type A and other medicated feed products (pellets, cubes, free-choice mineral, or free-choice liquid): Cattle must not be slaughtered for 13 days. For dairy cattle, the milk discard time is 60 hours.

Consult your veterinarian for assistance in the diagnosis, treatment and control of parasitism.

PANACUR RESIDUE WARNINGS: Cattle must not be slaughtered for human consumption within 8 days following treatment. For dairy cattle, there is no milk withdrawal period at the 5 mg/kg dose. Do not use at 10 mg/kg in dairy cattle. Dose rate of 10 mg/kg is for beef cattle only. Dose rate of 10 mg/kg in dairy cattle could result in violative residues in milk. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use calves to be processed for veal.

US-PAN-260500001