Quote:
Originally Posted by ladyjane  There really is nothing dreadful that I can see happening from Advantage or Frontline. I simply would not buy it because if it was not effective, I don't feel like dealing with fleas.
Now...if it is a problem with a heartworm product...THAT could be dreadful if a pup got heartworms. |
Depending on the products used, the climate it's been sitting in, the shipping conditions it was subject to, the product could become deactivated.
NTM, you could have a chemical reaction in the product itself depending on those conditions and it is possible for the flea medicines to cause chemical burn.