How do I safely treat a bad flea problem on my 7-month-old puppy?
Pretty much all of the OTC flea medications are safe for 7 month-old puppies. There are several options, such a monthly topicals, flea collars, or a Seresto collar. Flea shampoos don't work well at all. Prescription oral flea preventative seem to work the best, in my opinion, so I would recommend that Grace be checked out by a vet so she can get started on one of these.
Please know that it can take several months of consistent treatment to get rid of a flea infestation. Fleas don't live on the dog, they only jump on at bedtime. So, if you see a 2 or 3 fleas on Grace at one time, then there could be 20-30 fleas off of her, laying eggs to make new fleas!
Here is some more information on fleas:
http://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=3682
Updated on September 23rd, 2025