Flea and Tick Preventive

T-dog…I’ve used ivomec with 1 percent Ivermectin as the active ingredient
The last bottle I bought has 250 mils…the price was close to a hundred dollars for the bottle…i paid 1 dollar for it because the expiration date was exceeded…it is ivermectin but a generic brand…

Here is how I came up with the idea on how to treat my dogs…heartworms take 6 months to reach maturity and a small monthly dose will not kill them but that dose is supposed to keep the larva killed off…
If I give the 1.5 cc dose every three months my assumption is that the high dose should keep working for at least two months maybe longer…so the next dose is right around the corner and the added benefit is no fleas and the microfilaria will not survive the big dose…it also seems to control stomach worms…