Only two months after we adopted Rusty he somehow obtained hookworm (and he had mange, we referred to him after that as "our mangey mutt").
Gross. AND he was such a good dog, that's the ONLY time he's ever relieved himself inside of our house.
Hookworm is disgusting. It gave him diarrhea for a week. And it was seriously exploding diarrhea. He had to eat cottage cheese and rice for a week and a half. Oh, and we had to give him doggy kaopectate so his stomach would calm down. GROSS. I'm telling you, that was practice for having kids.
However, when we chose a Heartworm product, we decided to go with Interceptor that covered 4 different types of worms. Why? Well, because we didn't want to have to deal with Hookworm again. Interceptor covers the following worms:
Heartworm (100% effective)
Hookworm (97% effective)
Roundworm (97% effective)
Whipworm (97% effective)
It's about $9 per month, but if you buy a year's supply, the pharmaceutical company generally offers some sort of rebate.
But there's different types of solutions for different families. We also looked at Revolution. It can control the following in canines:
Heartworms, fleas, some ticks, ear mites and scabies mites.