Frontline Top Spot for Dogs 23-44 lbs, Blue, 12 Pack (1013915)
Frontline Top Spot for Dogs 23-44 lbs, 12 Month (Blue) starts working right away and kills all existing fleas on your pet within 24 hours. Top Spot contains Fipronil, a broad-spectrum insecticide to all kill existing fleas, ticks, and lice. Fipronil collects in the oils of the skin and hair follicles, and continues to be released from hair follicles onto the skin and coat, resulting in long-lasting activity.
- Kills all stages of brown dog ticks, American dog ticks, lone star ticks, and deer ticks (which may carry Lyme disease)
- Rapidly eliminates infestations with chewing lice
- Manufacturer information and usage
Within hours of applying this to my dog, I could literally see dead fleas falling off him. This is by far the most effective flea product I've used