So I have a cat that needs to be treated for worms. The bottle says that I should give her 1/4 tsp per 2.5 lbs. My cat is 15lbs. I already took 15÷2.5 and got 6.

Then I took 6 • 1/4 and got 1.5. I just don't know if I giver 1 and half teaspoons.