I use sentinel, it comes in 2-10 pounds and 11 to 25 pounds for doses. I give my 9-10 pound dog the lower dose and my 15 and 20 pound dogs the higher dose (every 6 weeks).
My vet would prefer that I use the higher dose for all 3 and give every month all year round. But, I give them a break and skip when the ground is frozen, maybe a dose or two….it depends on lifestyle and where you are located whether it would be wise to take chances.
Do you need the sentinel spectrum? Ask your vet if regular sentinel would be good enough. There isn’t much difference, just one additional ingredient.
Splitting tablets that are not scored (I don’t believe sentinel is scored) could result in an inadequate dose as the ingredients may not be evenly distributed within the tablet, one dog might get too much of one ingredient and the other dog not enough,etc. So, that is not a good idea. I am a nurse.
Also, you can use the search engine here, to see previous comments.
