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Bug Check

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Feeding Chart

Daily Serving

Dog Weight - lbs Inactive Dog Active Dog Working Dog
Inactive Dog - Less than 30 minutes of vigorous exercise daily
Active Dog - At least 30 minutes of vigorous exercise daily
Working Dog - More than two hours of vigorous exercise daily
This is only a guide. Please consult your veterinarian to determine the perfect feeding amount for your dog.
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Product Overview

Insect control plus digestive support

Bug Check brings you the best of both worlds! Bug Check contains garlic, yeast, and grape seed extract to deter biting flies and diatomaceous earth to discourage insect breeding in manure. Bug Check is chemical free and palatable, with no "spray-on" hassle!

NOTE: SmartPaks and buckets/bags now contain Alltech Lacto-Sacc Probiotics.
  • Garlic, yeast & grape seed extract help deter biting flies
  • Diatomaceous earth helps discourage insect breeding in manure

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Key Ingredients


Supplement Facts

Ingredient Name Amount Per Serving
Ingredient Name Amount Per Pound

Ingredient Details


Weight Recommended Amount Loading Amount

How the Ingredients Work


Supporting Success

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The reviews provided on this website represent the experience of the individual posting the review. We do not adopt, edit, or endorse any of the submissions posted within the reviews section. Rather, the reviews are part of an online community of animal owners that desire to share their particular experience with other individuals. These reviews are not a substitute for discussing the health of your animal with a veterinarian.

SmartPak customers are some of the most conscientious animal owners around. We encourage you to share your experience with the products we sell to help fellow customers to make informed choices for their animals. We do not edit these reviews in any way - they are direct customer-to-customer communication. We do monitor reviews for positive and negative feedback, and use this feedback to improve our selection as well as sharing feedback with product manufacturers to help them improve their products. Please note that we recommend consulting your vet with serious health issues.

Bug Check is rated 4.1 out of 5 by 290.
Rated 1 out of 5 by from Did nothing Followed directions and finished the container. Started before bug season and now that it's here, bug season that is, I see no difference at all. My guy is being eaten up and needs to be sprayed every day. As for the fecal, I see more bugs attracted to it now than before. I will try something else but this is a no go. The only good thing is that he liked it, but his breathed smelled horrible.
Date published: 2018-06-07
Rated 1 out of 5 by from MY HORSE HATED IT I love the idea of this, but, my horse hated it, he would not eat it at all. he even stopped coming in his stall when it was in his feed pan.
Date published: 2018-05-24
Rated 1 out of 5 by from Beware - Ingredients misrepresented Just received a 30# bag today. The first thing I noticed was the ingredient list on the bag doesn't match what SmartPak listed for ingredients. Instead of dried grape seed as the primary ingredient, it's actually brewers dried yeast, a much cheaper ingredient with fewer health benefits. Had I known the ingredients had been downgraded and cheapened, I would not have purchased this product. Very disappointing.
Date published: 2018-03-15
Rated 5 out of 5 by from great love this stuff... ive been using it since november down in FL, does the job
Date published: 2017-08-09
Rated 5 out of 5 by from WORKS!!!!! Been using Bug Check for the last 3yrs,totally satisfied !!!!'n
Date published: 2017-08-09
Rated 4 out of 5 by from Seems to help deflect the flies, horseflies Ordered this on the recommendation of a friend, one horse ate it mixed with feed, one, not so much, so now we mix it with soaked alfalfa pellets. Stable/houseflies and horseflies seem less bothersome, but the biting kind of cattle flies don't seem phased by it. Will continue to buy but also use fly sheets, spray and fly boots.
Date published: 2017-08-01
Rated 5 out of 5 by from All natural Great job mixed with fly predators my barn is almost fly free
Date published: 2017-07-25
Rated 5 out of 5 by from Reduces Flies I have three horses and love this product. I have used it for three years and it definitely helps reduce flies. I have one horse in particular who was always covered with flies and bleeding because flies were biting his legs, this does not happen with bug check!
Date published: 2017-07-05
Rated 5 out of 5 by from Over the years I have managed health food stores and am still an avid health food nut. When my Schnauzer was still alive I always gave her brewer's yeast supplements to keep the fleas away. I gave my horses them too to help with bugs and ticks. When I saw this fabulous formula I bought it for my trail horse Rocky. I have witnessed him with fewer flies and mosquitos than the other horses in the pasture where I board him. They seem to land and fly away. I will continue to purchase Bug Check not only for the bugs but for all the other nutritional advantages this formula has to offer!!! Thank you Smartpak for offering this supplement to make my horse and others more comfortable during the fly season!
Date published: 2017-05-24
Rated 5 out of 5 by from Keeps our coastal bugs away This is the first product that allows our horses not to wear fly apparel everyday or become welted by the annoyance of bug bites.
Date published: 2017-04-04
Rated 5 out of 5 by from LOVE IT! I love this. I have purchased this for over 6 months and tried without. Huge difference between being on or off of it.
Date published: 2016-12-06
Rated 5 out of 5 by from Bug Check is Amazing Bug Check truly works. We noticed a significant decrease in the amount of flies on the horses after we started feeding Bug Check. The horses like it and it works!!!!!!
Date published: 2016-09-09
Rated 5 out of 5 by from Great Product! I have a thin-skinned chestnut who attracts every bug in the world! This year has been the worse even to the point where I had to keep him in during the day behind closed doors with the fan blowing on him. Within a week I noticed a slight difference, and within 2 weeks he could roam around his paddock with just a quick spray and his fly sheet. The bugs hover around him, but not on him! An added perk to this product is the coat condition; shiny with dapples. While this product doesn't eliminate the bug issue, it sure makes it manageable and my horse comfortable again.
Date published: 2016-08-03
Rated 4 out of 5 by from Actually works! While I still use fly spray on my horse, he is so much better this summer than last summer and I'm sure it's the Bug Check. Before he would toss his head the entire ride due to bugs and now he hardly does it at all!
Date published: 2016-08-01
Rated 5 out of 5 by from It really works!!!!! Bug Check absolutely works to minimize fly's on the horse! Amazing success! Note to Horse Owner - your horse will have Dragon Breath!!!!!!!!!!!
Date published: 2016-07-05
Rated 5 out of 5 by from have used before and pleased I have used before and feels it helps more with ticks and fewer flies
Date published: 2016-06-09
Rated 4 out of 5 by from Feed Through Bug Control in a Powder Form I am using Bug Check mixed with applesauce and giving it to my horse in an oral paste. He won't eat it in his grain, but since it's a powder form, it mixes well with the fruit sauce. I just started him on Bug Check and hope to notice results in a few weeks.
Date published: 2016-05-16
Rated 1 out of 5 by from Waste of money Did not work in the slightest.. Horse didn't like it , had to use fly spray all year.. I want my money back!
Date published: 2015-11-21
Rated 4 out of 5 by from Works well Had used this product in the past; but discontinued when some veterinary studies stated a link between garlic and Heinz body anemia in horses. Have re started after discussion with our vet. Seems to work well, especially in conjunction with Spalding fly predators at reducing the fly population at our farm.
Date published: 2015-10-23
Rated 5 out of 5 by from Really diminishes flies! I have purchased Bug Check for two years now and it reall does reduce the fly issues in the barn/ stalls.
Date published: 2015-09-17
Rated 3 out of 5 by from Not repelling flies going back to simplifly as feedthru. Not working. Flies still all over horses
Date published: 2015-07-15
Rated 5 out of 5 by from Works! I have had my horses on this for a few years now, seems to work very well.
Date published: 2015-07-06
Rated 4 out of 5 by from Big difference I have used this product for years and I didn't realize how much it helped until one year I didn't use it...big mistake!
Date published: 2015-06-25
Rated 3 out of 5 by from Average product Bought this a month ago so it just into my horse's system. The bugs usually dive him crazy. This product seems to keep the edge off him so he is not as reactionary to the flies. However, the bugs still keep after him when it is warm
Date published: 2015-06-02
Rated 5 out of 5 by from Bug Check is the Best Do you want to be exposed to less toxic flysprays? Do you want your horses to be happier and less irritated by bugs? Do you want your outside horses to have show quality coats? Feed this. Done.
Date published: 2015-01-22
Rated 1 out of 5 by from didn't help product did nothing to stop the bugs biting this horse. Trying the smart pack brand and it seems to be helping
Date published: 2014-09-23
Rated 3 out of 5 by from Works Great! It seemed to help my horses a good bit. The difference was crazy to see from before and after they started getting the supplement.
Date published: 2014-08-25
Rated 5 out of 5 by from liking the individual smart pack doses. So easy to use
Date published: 2014-08-18
Rated 5 out of 5 by from Very good product I have used this product and it is a very good product my only problem is getting the product. We have ordered it twice and it is always back ordered and it doesn't do my horse any good if I can't get the product for him.
Date published: 2014-08-11
Rated 2 out of 5 by from May change I bought this for my stanardbred and found it worked somewhat but I would rather use something else the bugs ate really bad where I am so I'm not sure if that's it but I put my donkey on something else which I may switch my standardbred to. My standardbred is always coming in dripping swear and gross and has to be hosed off(I USE MORE FLY SPRAY THAN ANYTHING)
Date published: 2014-07-26
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