For anyone who uses Sentinel (or knows more about it than I do).......
Does it only prevent development of flea eggs or does it kill adults as well?
I'm trying to find something out there that's good for heartworm AND flea protection that isn't chock full of chemicals.
I ask because I'm currently using Natural Defense flea/tick on Lacey, and while I like the all-natural ingredients, I HATE the bright yellow stain she gets all over her from it and the terrible pine tree smell that never seems to go away (even with professional grooming). I don't want to deal with that again next month. It's really really awful stuff
She's only 3lbs, so I'm sort of limited on what I can use for heartworm protection, I think. Help?!