There is no expiration date required on the packaging by the EPA for Advantage® II for dogs. The product should be kept in its original packaging and stored as directed on the label.Click to see full answer. Hereof, does flea treatment expire?This item doesn’t have an expiration date, but rather a manufacturers date on the box. After two years, this item may start to lose its potency, but it doesn’t expire.One may also ask, can comfortis be used after expiration? However, if there is no color or odor change and it is a few days beyond that date – it is probably okay. But this is not a medication that will last long. Medication still in powder form is probably still good for 1 to 2 years beyond the expiration on the label. Considering this, can I reapply flea treatment early advantage? Yes, if after two weeks the one you applied isn’t working, you can reapply flea treatment early, or switch to another brand. I recommend using Advantage or Revolution.Does flea and tick expire?When properly stored and under ideal conditions it will be good for 4 years. If there has been a variance in temperature it may reduce the effectiveness of the product. Do your flea and tick shampoo products have an expiration date?