Can I use the tick and flea collar on my puppy? She is 7 weeks.

Flea and tick collars are outdated and aren't as effective as the newer products. Advantage, advantix, or Frontline Plus are the only ones I would use if I wasn't using essential oils. All of those can be used on a 8 week old I think, it should say on the packaging. Never use the cheap ones like BioSpot or Hartz, they can cause chemical burns and can make your dog sick. These products are absorbed into the bloodstream, so absorbing a toxic chemical from the latter two could be life-threatening. There are also flea baths, but if you go that route, make sure the shampoo stays on for 10 mins before rinsing. You can also spray your environment with an IGR (insect growth regulator) to inhibit egg and larvae development.

Just to add- Never put on a flea collar in combination with a topical, it can make you puppy VERY sick.

I've never found flea collars to be effective. I agree with the advantage, frontline, etc. If you don't want to wait until 8 weeks, try giving her a bath with dawn dish soap before then.

I have used Frontline plus for years on all my dogs. I would not start before 8 weeks, but please ask your vet.