There has been a study that shows it is not a good idea to switch from Milbemycin in midseason, unless you overlap and give the ivermectin at the same time for a month or so. This is because Milbemycin is less effective at killing the earlier larval stages than Ivermectin, but Ivermectin does not kill the later stages as well. That’s also why the Milbemycins are labeled to use for 3 months post season, so here in FL, you need to use both to switch even in winter, because we don’t have 3 months post season, not even 3 weeks.
For anyone thinking of getting Ivomec liquid and dosing your dog yourself. The regular liquid is 1% and even one drop of it is an overdose for most dogs, which can lead, over time, to liver failure. The sheep drench(available at Jeffers dot com among others) is 0.08% so is much easier to dose appropriately.
I use Ivomec(the sheep drench) for heartworm prevention right now. I give garlic and use an essential oil shampoo and I feed 1/2 raw. Mostly I shampoo because they rolled in something, not because of fleas.
If I do have to shampoo for fleas, I wet the dog’s head and shampoo behind the eyes all the way around. This drives any fleas back down onto the body. Then I wet the rest of the dog and shampoo the rest of him. Leaving the shampoo on, I let him go play while I do the next one, and the next one. After I have 3 soapy dogs running around the yard, I call the first one back for a rinse, this gives the nasty little fleas plenty of time to smother in a coating of shampoo. I towel dry the first and put him in the house and start the rinse on the second. That guarantees that the last dog has enough time to kill all of her fleas.
1 month, 2 weeks ago
