Ivermectin Pour On or Dusting - Which Do You Prefer For External Parasites?

[leadwolf1]

Could the difference be that I am using Ivomec instead?

 

[ivan3]

Next time any of these `ectoparasites' show up have some tools handy:

You can shoot pics through loupes if camera doesn't have macro. The fact that you mentioned that they were crawling on you makes me think Northern Fowl Mites (they travel toward one's head). Although not approved in poultry, one can follow the guidelines for cattle, if one is so inclined (actual measures of residue ivermectin/eprinomectin): http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1914318/

 

[leadwolf1]

These were definitely not mites, they were lice...I positively id'd them.

 

[ivan3]

Well, the only issue remaining is the withdrawl (again, most work has been done in ruminants so YMMV) time (30 day for Ivermectin/ no withdrawl for eprinomectin).

Don't know why any Avermectin derived product wouldn't kill any adult louse, of any species. The original testing regime of the products probably holds a clue to potential confusion: again, ruminants (note the routes of application and the results):

Ivermectin and abamectin belong to a newer group of potent antiparasitic agents and fermentation products from Streptomyces avermitilis (Burg and Stapley, 1989). These systemic compounds are relatively persistent, broad spectrum toxicants active against nematodes, acarines and insects. Different formulations of ivermectin that can be applied by injection, orally and topically are available, and the type of formulation can have a marked effect on the antiparasitic activity. In general, the injectable formulation exhibits the highest activity against many species of ectoparasites. However, biting lice such as B. (Damallnia) bovis (Figure2) and B. ovis from cattle and sheep, respectively, are not eliminated consistently from animals given therapeutic injection or oral administration of ivermectin, whereas sucking lice that ingest blood body fluids from their host are highly susceptible (Benz el al. 1989). This difference may be related to the superficial feeding pattern of biting lice since when ivermectin is applied topically to cattle it effectively controls several ectoparasites (Barth etal., 1986; Alva-Valdes et al., 1986; Hotson et al., 1985) including sucking and biting lice..

http://phthiraptera.info/Publications/42074.pdf

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[effie]

OK,so I dusted with seven dust today after cleaning the coop. I was wondering after reading all this dusting and spraying stuff--are there any spray bombs that they make for fleas and such that you could set off in the in the coop-sounds like it would be so much easier and more thorough. Just a thought. I could move my chickens to another coop for that period of time. Any thoughts??