3. The measurement is in volume, not weight. We use teaspoon amounts, which is the volome measurement, not ounces, which is the weight measurement. At 77 pounds, he will need just over 1/2 ounce of the Pet Wormer as each 1/2 ounce will treat up to 50 pounds pet weight.
He will need 1/2 teaspoon added to his food three times per day for 5 days. Or 3/4 of a teaspoon in his food twice per day for 5 days.
4. The senna is just enough to help move stuff through his bowels, not enough for diarrhea.
5. Treat hime during the last of your cleanse, that way the whole family will be done at the same time.