SKU: 85996959359

Merck SAFE-GUARD® (fenbendazole) Protein Block (25 Lbs)

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Description

Merck SAFE-GUARD® (fenbendazole) Protein Block (25 Lbs)SAFE GUARD 20% PROTEIN BLOCK (fenbendazole) Product Description Type C free choice medicated feed for Beef & Dairy Cattle SAFE GUARD (fenbendazole) Medicated Dewormer for Beef Cattle (20% Protein Block) is indicated for the removal and control of lungworms, stomach worms, and intestinal worms. Indications For The Treatment And Control Of: Lungworms Adult Dictyocaulus viviparus Stomach worms Adult brown stomach worms (Ostertagia ostertagi) Adult and

SAFE-GUARD® 20% PROTEIN BLOCK

(fenbendazole)

Product Description

Type C free-choice medicated feed for Beef & Dairy Cattle

SAFE-GUARD® (fenbendazole) Medicated Dewormer for Beef Cattle (20% Protein Block) is indicated for the removal and control of lungworms, stomach worms, and intestinal worms.

Indications

For The Treatment And Control Of:

Lungworms

  • Adult Dictyocaulus viviparus

Stomach worms

  • Adult brown stomach worms (Ostertagia ostertagi)
  • Adult and fourth stage larvae barberpole worms (Haemonchus contortus)
  • Fourth stage larvae barberpole worms (H. placei)
  • Adult and fourth stage larvae small stomach worms (Trichostrongylus axei)

Intestinal worms (Adult and fourth stage larvae):

  • Hookworms (Bunostomum phlebotomum)
  • Thread-necked intestinal worms (Nematodirus helvetianus)
  • Small intestinal worms (Cooperia punctata & C. oncophora)
  • Bankrupt worms (Trichostrongylus colubriformis)
  • Nodular worms (Oesophagostomum radiatum)

Dosage

One block treats 8,000 lb. (500 lb. of cattle per 1.5 lb.).

Adequate forage must be available at all times to cattle receiving supplemental block feeding.

Safe-Guard® (fenbendazole) 20% Protein Deworming Block (Medicated) is designed for deworming pastured cattle by feeding these medicated blocks for three (3) days only as the sole source of salt. It is essential to establish full cattle adaptation to supplemental block feeding prior to treating cattle with Safe-Guard® 20% Protein Deworming Block (Medicated). Cattle behavior and per capita consumption must be established by feeding nonmedicated 20% Protein Blocks prior to medicated block treatment. Adaptation to block feed intake for medicated treatment may take twelve (12) to nineteen (19) days of prior exposure to unmedicated feed blocks depending on consumption rates and environmental conditions. When cattle block consumption of 0.1 pound (1.6 ounces) per 100 pounds of body weight (or 1.0 pound for a 1000-pound cow) per day is attained for several days on the nonmedicated 20% Protein Block, the three (3) day medicated treatment with Safe-Guard® 20% Protein Deworming Blocks (Medicated) may begin.

For effective treatment, the cattle must consume an average 0.1 pound of Safe-Guard® 20% Protein Deworming Blocks (Medicated) per 100 pounds of body weight each day for the three (3) days of treatment. This is equivalent to an average of one (1) pound per head per day to a 1000-pound cow for the three days of treatment in order to provide a total dose of 2.27 mg fenbendazole per pound of body weight. To commence deworming treatment, replace the nonmedicated blocks with Safe-Guard® 20% Protein deworming Blocks (Medicated). Place these medicated blocks at the same locations where cattle have demonstrated adequate per capita block intake (0.1 pound per 100 pounds of body weight per day).

DAILY TREATMENT (To be continued for three [3] days):

 

Cattle Body Weight
(pounds)
Average Block Intake
(lb/head/day)
Number of Head
Per Block*
500 1/2 16
750 3/4 11
1,000 1 8

 

*NUMBER OF HEAD FULLY TREATED BY EACH BLOCK WHEN CONSUMED IN THREE (3) DAYS.

Following the three (3) day treatment any remaining Safe-Guard® 20% Protein Deworming Blocks (Medicated) should be removed from the pasture and cattle may be returned to their normal supplemental feeding program. Remaining blocks, or portions of blocks, can be utilized for retreatment purposes if used prior to the expiration date shown below.

It is essential that good block feeding husbandry practices be followed at all times. Block feeding techniques include, but are not limited to, a variety of practices. Blocks should be first located in those areas where cattle are seen to browse or loaf. It may be desirable to relocate unconsumed blocks to locations where obvious block consumption is identified. Increased consumption may often be obtained by moving feeding stations into shaded or loafing areas, closer to water source, increasing the number of blocks available to the animals or combinations of these practices. Decreased consumption may often be obtained by the reverse of the above practices.

Drug Feeding Rate

1.67 mg fenbendazole per kg body weight per day for three (3) days. Total dose for the three (3) day period of 5 mg fenbendazole per kg of body weight (2.27 mg fenbendazole per pound).

Do not underdose. Ensure each animal receives a complete dose based on a current body weight. Underdosing may result in ineffective treatment, and encourage the development of parasite resistance.

Active Ingredient

Fenbendazole 750 mg/lb

Storage

Store at or below 25 °C (77 °F).

Warnings

NOT FOR USE IN HUMANS. KEEP OUT OF REACH OF CHILDREN.
The Safety Data Sheet (SDS) contains more detailed occupational safety information. For customer service, adverse effects reporting, and/or a copy of the SDS, call 1-800-211-3573. For additional information about adverse drug experience reporting for animal drugs, contact FDA at 1-888-FDAVETS, or http://www.fda.gov/reportanimalae.

Other Warnings

Parasite resistance may develop to any dewormer, and has been reported for most classes of dewormers. Treatment with a dewormer used in conjunction with parasite management practices appropriate to the geographic area and the animal(s) to be treated may slow the development of parasite resistance. Fecal examinations or other diagnostic tests and parasite management history should be used to determine if the product is appropriate for the herd, prior to the use of any dewormer. Following the use of any dewormer, effectiveness of treatment should be monitored (for example, with the use of a fecal egg count reduction test or another appropriate method). A decrease in a drug’s effectiveness over time as calculated by fecal egg count reduction tests may indicate the development of resistance to the dewormer administered. Your parasite management plan should be adjusted accordingly based on regular monitoring.

CONSULT YOUR VETERINARIAN FOR ASSISTANCE IN THE DIAGNOSIS, TREATMENT AND CONTROL OF PARASITISM.

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 20% Protein Type C Medicated Block: Cattle must not be slaughtered for 16 days. For use in beef cattle only.

Contact

U.S. only: Merck Animal Health
The Safety Data Sheet (SDS) contains more detailed occupational safety information.
For customer service or to request a copy of the SDS, please call 1-800-521-5767 or email [email protected].
For product questions or to report an adverse event, call 1-800-211-3573 or email [email protected].
For additional information about adverse drug experience reporting for animal drugs, contact FDA at 1-888-FDAVETS, http://www.fda.gov/reportanimalae.
For more information regarding efficacy and safety data, go to http://productdata.aphis.usda.gov
For additional information, please see the product label.

Shipping Notes
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SKU: 85996959359

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Room112
Los Angeles, US
★★★★★ 5
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Our pup is now 15 months old (nearly 110 lb and still growing). We got this ball when he was 3 or 4 months old. GOODS - - Our pup fetches with extreme drive, and the rope helps him quickly snatch the ball off the ground (versus a tennis ball, in which we are worried he will go head over heels at times) - Our pup also loves to play fetch in the water, and this ball floats great and again, the rope gives another point to bite onto - The yellow color is easy to see, even in grass - Our pup typically fetches the ball, and leaves the rope mostly out of his mouth. So, throwing the ball doesn't result in saliva-covered hands - It's pretty easy to throw the ball 50', and possible to throw it 100' - It doesn't roll/bounce, so if you are for example playing fetch on your front lawn and are concerned with a tennis ball rolling into the street, this one alleviates that issue - Our pup is spoiled and has several balls. This is absolutely his go to ball. We have woken up in the morning before to see him standing next to the bed with the ball in his mouth, asking us to get up and play. BADS - - Occasionally when he goes to fetch it, he will step on the rope as he tries to pull up on the ball. - We have gotten this ball stuck in trees multiple times. In fact, there is one stuck on the roof of our church from playing fetch on the lawn there. :-/ Not a fault of the ball, but if you start whipping it around like nunchucks, it might not go where you want. - The near max you can through this ball is 100'. And since it doesn't roll/bounce, throw distance is throttled. We often play fetch in a local baseball field, and have no issue wearing him out with this ball. However, if you are planning on throwing a ball the distance of half a football field, you might want to consider something else. SIZE - - We purchased both the medium and the large. Even though our pup is huge and can fit a soccer ball in his mouth, he still prefers the medium. It's easier for him to get in his mouth and breath while running back. The medium is the size of an orange, whereas the large is the size of a grapefruit. DURABILITY - - We have gone through about 4 of these balls, BUT this is because we lost 3 of them. We believe he dropped one out of the car window while we were driving, one is on the roof of our church, and I forget about the other one. On the first one we had, the stitching behind the black tape was down to a few threads after about 5 months. Given duration we use these balls (every day) and the joy he gets from them, I feel the durability is good for the price. - We do play tug with the ball at times, and no issues there Enjoy!
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Reviewed in the United States on December 17, 2013
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Greg
Birmingham, US
★★★★★ 3
Good but better options out there.
Good ball, but is a cheaper version of the Foamster sold online. The rope is cheap and comes apart, and can be abrasive to a dogs mouth. The Foamster uses a higher quality ball and are more durable and use grippy biothane straps rather than cheap rope. They are also made to order in the USA with lots of fun colors. Worth the extra money if your dog likes these balls.
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Reviewed in the United States on February 10, 2025
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Kristen
Houston, US
★★★★★ 5
Fun toy for fetch
Size: Medium, Number of Items: 1
Daisy loves this toy. I found it from her dog trainer, and it makes rewarding her with a quick tug of war and fetch really easy. Also it’s shockingly durable. It looks like foam, but she has not destroyed this one.
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Reviewed in the United States on November 11, 2025
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seafan
Los Angeles, US
★★★★★ 5
Sturdy and soft like hiking on clouds
Size: Large, Color: Color Mix
I am in love with these socks! In fact I've reordered five more times and have told my hiking friends about them, and they've ordered them now, too. We all love them. This is an excellent price for a 70% Merino wool sock. They wick away moisture & keep your feet nice and dry and comfortable in your boots. They're very cushiony yet your feet do not overheat. I bought these for the gym and for hiking. I actually hike about a hundred miles a month so I can tell you these socks go through a lot with me! The ankle cut socks are perfect for both my trail runners and my actual low ankle boots. The arch support keeps the sock firm on my foot and does not allow the sock to bunch up down towards the toe. The Merino wool helps to control moisture and my feet do not stink after a 6-7 mile hike. And oh my gosh they are so soft! It's like walking on clouds. I've had no issues with holes in the socks and will definitely update later if I do. I highly recommend these socks and tell your friends about them too
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Reviewed in the United States on April 16, 2026
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christopher laughlin
Chelsea, US
★★★★★ 5
Best socks ever! Wool blend keeps my feet cushioned.
Size: Large, Color: Color Mix
Anyone complaining about it not feeling like real wool didn't read the description, it says wool blend. They are the most comfiest socks I have ever purchased! They fit well they keep my feet warm . They don't sweat in hot weather. I almost forgot I had them on this evening. Best socks ever!!!!
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Reviewed in the United States on May 8, 2026

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