I have been using this for years for our dogs, instead of the Heartgard I use to use before. It is significantly less expensive.
ProsThe price. Less than half that of Heartgard.
ConsEven though these are "chewables", our dogs don't care for the taste and will spit them out. So I have to use the forced swallow method of administering.
Also, I just found out that the manufacturer has suspended production - something about changing locations or a new facility - and when current supplies are gone will likely be unavailable until sometime next year.