Deworming Schedules Shared by Readers

More than 1,370 readers of TheHorse.com responded to a poll asking, "How often do you deworm your horse(s)?"

results of poll on deworming

Results were as follows: 

  • 4-6 times a year 67.44% (926)
  • Twice a year 16.90% (232)
  • When fecal tests indicate I should 8.67% (119)
  • Monthly 5.68% (78)
  • Once a year 1.09% (15)
  • Never 0.22% (3)

Readers shared their deworming tools in the comments below.

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  • Diatomaceous Earth and testing is excellent to keep horses worm free without the use of chemicals.
  • We also do fecal tests to determine if we are getting the results we expect.
  • I use daily wormer and worm with paste twice a year
  • I only deworm my horses when a diagnostic fecal exam shows that it is needed - to prevent resistance
  • We deworm our horses every 2 months on a dewormer rotaion schedule.
  • every 49 days
  • Daily wormer and paste for tapeworms twice a year
  • small acreage
  • Strongid2X daily + every 2 mos proper rotation of paste or liquid wormer as per DVM
  • I need to know what I'm worming for
  • Also use daily dewormer
  • every 6 weeks
  • I worm my horse(s) every 3 months. Tori :)
  • minimum every 3 months
  • 3 times per year
  • every 6-8 wks.
  • Rotational worming schedule. Every two months ivermectin or pyrantel pamoate.
  • dailly de-wormer and paste 2X a year
  • I use Ivermectin each time, except for one per year use Quest for bots.
  • plus daily dewormer
  • We rotate dewormers every 2-3 months.
  • also give daily wormer
  • every 3 months at the change of season.
  • Spring and fall with Praziquantel in conjunction with a daily feed-thru
  • twice a year plus daily wormer
  • we live in Wyoming where its below freezing for a good part of the year
  • every 8 weeks
  • actually 3x; April, August & Dec.
  • Every 8 weeks coinciding with farrier visits.
  • in addition to daily wormer
  • Actually the barn owner decides when to worm them. On what basis I do not know!
  • My horses get wormed when trimmed. I also have fecal tests done once a year.
  • Alternate between strongid & ivermectin
  • Now having 2 horses I may do it more per year.
  • We take fecal samples twice a year. Some horses haven't been wormed in 3 years, others twice a year
  • Actually 3X per year but this wasn't a choice.
  • Used to deworm more. Fecal tests show it's not necessary. Don't want extra unnecessary toxins .
  • Depends, 2 horses get supplement with natural dewormer, the other gets wormed occassionally
  • I worm this often because it is cheaper than fecal egg counts on 4 horses
  • DAILY- My horses refuse the paste so I give then teh daily granules with their food.
  • every 3 months
  • some times 3
  • I like to worm 6 times a year, but do use different wormers for the time of year.
  • 2x for adults in stalls, 4x for pasture horses, 6x for babies
  • And more often if fecal tests should indicate. We do Spring-encysted small strongyles/fall-tape wor
  • I worm my nine horses every 3 months....more or less ....keeping an eye on each horse.
  • I have just a few and they don't go to shows and not on pasture so worm only quarterly.
  • I do rotational worming at least 4 times a year, usually 6 times.
  • There was no correct option. We worm at season/pasture change and as required per fecal tests.
  • 4x a year: Its simpler for me to just go with the change of seasons according to the calender.
  • I use a daily wormer & Strongid twice a year
  • once every two months, rotating wormers each time :)
  • every 8 weeks
  • usually fecal as well
  • Cloesed herd
  • I use a daily feed through wormer (Strongid), so I paste worm 2x/year with Ivermectin Gold.
  • we do it when ever the farrier comes. they're all caught anyway, and it's easy to remember.
  • Every 8 to 10 weeks, & we do fecals to check too.
  • monthly for young horses up to two and then every other month
  • 2-3 x a yr.. I prevent infestation using natural methods.
  • not sure if this measures up, but this should correspond to ever 8-12 weeks
  • My horses don't go anyplace and there are no new introductions to the herd so 2x is sufficient.
  • We do fecal tests every two months. Vet worms our gelding 1X per year
  • I worm 4 times per year.
  • rotation including power pack and praziquatel
  • Actually every time they're trimmed
  • I use a daily wormer plus a paste wormer twice a year for tape worms, bots etc.
  • closed herd, worried about resistance
  • Every three months, rotational
  • also do fecals occasionally
  • Every time I deworm I also rotate my wormers.
  • i USE A DAILY FEED THROUGH WORMER AND A PASTE WORMER SPRING AND FALL
  • I will worm according to fecal egg counts when these become easily available to me
  • The vet determines when and with what chemical.
  • Also use a daily wormer and power pc 1 time a year .
  • 3-4 x annually
  • Fecal tests + ivermectin (spring) and ivermectin+praziquantel or moxidection (fall)
  • I purchase the 1-yr pack
  • Fecal tests aren't always accurate. I think we over worm!
  • i worm every month until one year and then every other month depending on how bad the season is
  • Every 6 weeks on the same day as the farrier trims the hooves.
  • He's on Strongid C2x daily and Equimax 2x a year
  • actually a daily wormer which isn't a choice for some reason
  • last fecal test showed 0
  • Vet deworms horses and they are on a daily wormer the rest of the time
  • I mostly trail ride - not around a lot of other horses in enclosed spaces.
  • power pack in Feb
  • Was worming every 8 weeks. Now vet says to do fecal tests every 6 months to see if indicated.
  • every other month, rotating wormer classes
  • Boarding facility determines schedule and type of wormer used.
  • we deworm our adult horses every 8 weeks and our younger ones every 30 days
  • Daily wormer too
  • Low shedders 2-3 times a year. High shedders 4-5 times a year.
  • rotating products according to parasite life cycles
  • Rotate de-worming every 8 weeks.
  • 6 times a year on rotation between ivermectin, bendazole, and pyrantel pamoate
  • Worms are becoming more and more resistant to wormers by worming too often.
  • 3-4 times/year
  • Ivermectin q3months + strongid 1x/yr
  • also use daily wormer
  • also paste Ivermectin (summer & winter), ivermectin/praziquantel (spring & fall).
  • Live in Arizona desert, horses on dry lots, no need for more than twice a year
  • I also remove all manure from pastures and paddocks regularly to limit worm load.
  • I rotate my wormers
  • use daily dewormer and then 2x yearly w/ ivermectin/pranzaquantel paste
  • I use a daily wormer and a paste before the seasons change.
  • Continuous Wormer all winter with Ivermectrin bi-monthly Summer bi-monthly on all
  • daily wormer with twice a year spring and fall ivermectin
  • Eqimax only -- no rotation per vet's instructions
  • every day - continuous wormer
  • rotate-8 wks, but too many owners to coordinate fecal tests, plus cost of tests
  • Yearly fecal tests - NO worms 3 years in a row - NO WORMER!
  • Twice a year by the vet, but she also gets a daily wormer with bran
  • Daily supplement
  • All year long, I use food quality diatomaceous earth daily..no worms per fecal tests
  • new system: fecal egg count then treat (worm 2-4 times per year)
  • none of the above, I worm every 8 weeks which workes out at 8 tmes a year.
  • daily dewormer
  • Rotate wormers,Quest+[3 mons] & Eqvalan[2 mons]Quest+ at appropriate times of yr for tapeworm.
  • Five times-April/Dec
  • I rotate 3 types of wormers every other month.
  • Hey, what about daily deworming? No worms in my guy.
  • I also worm after the 1st frost to kill the bots
  • My horses are on a strict schedule, 6x a year w/3 different types of paste.
  • If u r not utlizing fecals u r missing the boat! Thanks to Fort Dodge for educating us!!!!
  • I use a daily wormer on one horse and he is done 2 times a year.
  • I use daily wormer and 2 x yr give Equimax.
  • 3 times a year
  • I worm bi-monthly
  • Actually 3-4X/year as my horse has very little contact with other horses or grazing.
  • You offer no appropriate response for a horse on Preventicare program.
  • Daily wormer
  • If you're not doing fecal tests, you're shooting in the dark.
  • also daily apr to nov
  • daily wormer during grazing season then paste for off season
  • Fecal test 1 horse then worm the herd.
  • worming is only a small part of the program , worm by season and weather mostly
  • When I feel it is necessary for my climate
  • Rotation Rotation Rotation
  • Daily wormer, then paste in Spring and late Fall
  • Use to worm every 8 wks - but with the new evidence against resistance we are taking a step back
  • Wormed and trimmed every 6 weeks
  • quit bi monthly rotation after moving to virgin pasture
  • daily with strongid, why don't you have a "daily" ? 2x year ivermectrin as per vet
  • Daily, plus 2 times per year with targeted paste wormer.
  • Why wasn't three an option?After last frost, mid summer after first hard frost. no problems.
  • Every two months with dewormer appropriate to the season, weather conditions, etc.
  • Use moxidectin/praziquantel every 90 days
  • Every eight to ten weeks
  • I use a feed-through daily wormer with Equimax twice a year.
  • daily feed through with 2xyear ivermectin
  • with the increase in the tick population we are worming every month and sometimes every 2 weeks
  • As prescribed by my vet
  • Pasture horses more often than stalled
  • plus a daily wormer
  • Includes PowerPak in March
  • I board my mare as soon as I have her home, I will monitor this better by doing fecal tests.
  • We are in a stable, but it is rare that the horses are exposed to other horses manure.
  • Use daily wormer and 2 for bots and tapeworms
  • + daily once frost is out until freeze next fall
  • Thinking of switching to when fecal tests indicate it necessary
  • every 2 months and rotate wormers
  • I deworm every time the farrier visit
  • 2 X yearly uless fecal comes back positive for something.
  • I clean 2xs a day only have 2 horses
  • 2x or more per year as needed plus daily
  • Every other month, however we are starting to have fecal tests regularly now per our Vets advice.
  • I use a daily dewormer...why is there no option for that one.
  • daily wormer and twice a year paste
  • Daily with Strongid
  • every other month--6 times/year
  • Rotation includes moxidectin in Winter, ivermectin, pyrantel and bendazoles every 2 months.
  • plus a daily dewormer
  • Daily wormer
  • More often if needed, usually ends up 3-4 times/ yr.
  • I have a small, fairly isolated herd.
  • Daily with Strongid
  • Twice a year in conjunction with fecal tests
  • roatate wormers
  • rotate wormers
  • I change each month
  • Monthly fecal counts performed
  • ivermectin only Thailand

About the Author

Megan Arszman

Megan Arszman received a Bachelor of Science In print journalism and equine science from Murray State University in Murray, Ky., and loves combining her love of horses, photography, and writing. In her “free time,” when she’s not busy working as a horse show secretary or riding her American Quarter Horses on her parents’ Indiana farm, she’s training and competing her Pembroke Welsh Corgi and Swedish Vallhund in dog agility and running.

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