Hi Joe.... here is a link to a site that talks about how much to give to different animals. They also sell it so I am pretty sure that they would know how much is safe and what it treats. For the record everything I read in multiple places states clearly that DM kills worms and parasites in the animals and that would include heartworm. I read that in a specific area on another site because it strongly cautioned DO NOT GIVE without first having a heartworm test run at your vets office because if they do have heartworm and it kills them it will kill your animal as the adult worms are in the heart and when they die they clog it and stop the heart from working properly. pasted below is the site address and some info right from the site below it. Hope this helps you out.
http://www.morethanalive.com/Diatomaceous-Earth-Food-Grade-Powder
Diatomaceous Earth For Pets and Animals
Pets - they come in all shapes and sizes. Protect them with DE. When lightly rubbed into their coats or dusted on their premises, it is very effective against fleas, ticks, lice, and other pests on pet dogs, cats, and birds. It can also be used as an organic wormer and will kill any worms or parasites the pets may have. When using as a de-wormer, mix the DE into their food as follows:
- Large Cats - 1 teaspoon
- Kittens - 1/4 teaspoon
- Dogs 100 lbs + - 1-2 tablespoons
- Dogs 50 - 100lbs - 1 tablespoon
- Dogs Under 50 lbs - 1 teaspoon
- Mini dogs - 1/2 teaspoon
As pets get older, they also get sore joints. With DE in their diet they will feel better. Apply to moist kennel areas to reduce odors, dry the area, and prevent pest breeding. Deodorizing and absorption are natural functions of DE, so add to kitty litter to absorb odors and keep the litter box drier.
All livestock such as Horses, Cows, Pigs, Sheep, Goats, Rabbits, Chickens and others will benefit from the use of DE. It is completely safe and nontoxic.
Some of the benefits that have been observed:
- Control of fleas and ticks
- Stimulates basic metabolism
- Converts feed better
- Reduces the desire to lick soil
- Scouring or diarrhea: when fed it seems to act as a material that draws both virus and bacteria out of the body and solidifies the stool
- Reduces odor and moisture in barns and stalls
- Better coat and hoof condition
- Keeps fly larvae from developing in manure, noticeably reducing the fly population
- Reduces annual vet bills--Decreased Mortality
- In Cattle: Decreased Mastitis
- Dairy Cattle: Increased milk production
- Kills parasites without chemicals
- Better egg production, stronger eggs, and reduces overall animal stress
- Added to livestock waters, will prevent algae from growing
Suggested Feeding and Application for Animal Rates:
- Beef Cattle - 1% of total weight of dry ration 5% in grain or 1oz. per day
- Dairy Cattle - 1% of total weight of dry ration or 1 oz. per day
- Calves - 4 grams in morning milk per calf or 2 oz. per day in feed
- Chickens - 5% in feed, use at full strength in dusting boxes
- Hogs - 2% of total feed ration, dust or spray on bedding and animals
- Horses - 5 ounces (1 cup) in daily feed ration
- Sheep - 1% in ground grains 1 part Diatomaceous Earth to 2 parts T-M salt
- Goats - 1% in grain, 1/2 oz per day, up to 50% in T-M salt
For large animals, DE may also be offered "free Choice" as long as dispenser is protected from the wind. Your livestock will also get the benefit of over 14 trace minerals that make up Diatomaceous Earth.
NEVER feed any other type of DIATOMACEOUS EARTH to any animal, other than the Food Grade fresh water DIATOMACEOUS EARTH by Perma-Guard.
Using Diatomaceous Earth As Organic pest control