Should I still be applying Frontline during the winter on my indoor/outdoor stray cat that I adopted this year? She doesn't have fleas nor ever had them that I know of since I adopted her this summer(I took her to the vets to get checked, 3 visits in a 6 month period). I've been using Frontline as a preventative measure.
Frontline Plus works for 3 months once applied for the protection of fleas so if you are in a cold environment then applying one last time in Dec will get your cat though the next 3 months. During the warmer months I would apply every month. vetcare