HMMMMM.....
https://eap.mcgill.ca/agrobio/ab370-04e.htm
2 take aways on this & 1 more I want to read more into.... Half way down link above is garlic....
1) Garlic is also used as a dewormer. Which, I guess isn't a surprise. It's anti-insecticidal properties have quite a bit of info, studies & lots of folks using for that in many scenarios.
2) Pyrethrum.... A common class of insecticides. I believe Permethrin is a Pyrethrum. Effective & gov data shows as "very safe" when used on clothes, for example, to keep ticks off. Now, commonly used in animals as dewormer as well. Here's the question I have that I want to get some feedback on and dig into..... Could it be used to repel biting insects???? Many dewormers do have these properties. Where Ivermectin was a MISS was on midges: it will kill the midge but the damage is done. Where Ivermectin is a HIT is killing ticks for example (or at least why efforts are made for use in Texas, to combat tick population - mixing with deer feed). Pyrethrum on the other hand.... Thinking out loud.... "COULD" potentially have the repellent properties like Permethrin does. I'm gonna dig more on this.
"Pyrethrum
Pyrethrum (
Chrysanthemum cinerariifolium) is commonly used as an insecticide in agriculture. It also has anthelminthic properties. As a dewormer, it is administered in powder form in animal feed. It may be safely used for warm-blooded animals, unless it is injected. In this case, it must be mixed with oil and the necessary precautions taken.
Pyrethrum is 100% effective against ascarids in chickens, in the amount of 200 mg/bird using 0.8% pyrethrum32. A complete cure was obtained against
Ascaris in chickens, by giving them pyrethrum powder (concentration unknown), using 2% of the ration for 7 days44. Pyrethrum is also useful against strongyles in horses, in the amount of 3.5 mg/kg of live weight35. For more information on the veterinary uses of pyrethrum, see Urbain and Guillot41.
Although a Mediterranean plant, pyrethrum may be cultivated easily in many places. For more information on pyrethrum culture, see the Agro-Bio synthesis entitled "Home Production of Pyrethrum", available at EAP."
"Garlic can be administered in several ways:
- Fresh: Fresh minced garlic proved to be clearly more efficient than garlic extracts for controlling internal parasites in carp30. Using fresh garlic is ideal although not necessarily the most practical on a day-to-day basis. The leaves and bulbs may also be used. If the animals do not want to eat the leaves whole, they may be cut into small pieces, mixed with molasses and bran, and shaped into small balls. The bulbs may be grated and mashed with molasses or honey and flour. Garlic may also be planted directly in the pastures in such way that the animals have access to it as needed.
- Powder: The most practical way to administer garlic is undoubtedly to add powdered garlic to animal feed. Powdered garlic can be bought at a reasonable cost in bulk from major food manufacturers (e.g. McCormick, Quest International, Griffith Laboratories, etc.).
- Pills: This is a method that is useful only for very small herds. Two or three pills of four grains is the required daily dosage for one sheep.
- Juice: British herbalist Grieve16 suggested using garlic juice or garlic milk as a dewormer. Garlic milk is made by boiling bulbs mashed in milk. Some researchers recommend, however, not boiling garlic as this reduces its effectiveness against parasite eggs and larvae.
- Mother tincture: Garlic mother tincture is given in dosages of 20 drops/day/10 kg of live weight.
In the case of dairy animals, it is preferable to feed them garlic during or immediately after milking so that the milk does not pick up the taste."