according to Frontline's website FAQ question #7 states: FRONTLINE Brand Products do not carry an expiration date. We recommend storing FRONTLINE Brand Products at room temperature and keeping them sealed in their original packaging. If stored under these conditions, FRONTINE Brand Products will not expire.

If my dog is 22 do I buy up to 22 or go to the second category 23 up?

I am in the same situation. I have found that the smaller dose is not effective. But the 23 and up does the trick.

Yes, but the product must dry before a bath or swimming. “Waterproof” is also listed on the front of package.

Does it actually work ?

We've used this product in the past and it worked, and we live on a corner and have our dogs in the country and camping in wooded areas. If I remember correctly, it won't kill adult fleas, but prevents them from reproducing and I believe the nuts as well. If there's an infestation, or a source of fleas nearby, even a neighbor animal, that doesn't have the flea problem addressed, the flea cycle will continue.

ASIN	B0002J1FNK
Active Ingredients	Methoprene
Age Range Description	Adult
Allergen Information	Allergen-Free
Best Sellers Rank	#24,092 in Pet Supplies ( See Top 100 in Pet Supplies ) #27 in Dog Flea Drops
Brand	Frontline
Brand Name	Frontline
Customer Reviews	4.5 out of 5 stars 5,313 Reviews
Dog Breed Size	Medium
Item Form	Topical
Item Type Name	Flea and Tick Treatment for Dogs Medium Dogs
Item Weight	0.1 Pounds
Item form	Topical
Item height	4.5 inches
Item volume	24 Milliliters
Item weight	0.1 Pounds
Manufacturer	Frontline
Scent	Unscented
Scent Name	Unscented
Target Species	Dog
UPC	350604288107
Unit Count	704.0 Ounce
Volume	24 Milliliters

Plus for Dogs Medium Dog (23-44 pounds) Flea and T

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