If a puppy is not healthy when given a vaccine, it is not going to work, and they may end up getting parvo or something else and might even die. If, for example, the puppy has a worm infestation, giardia, or is already ill from something else, the vaccine is not going to work an...
Unfortunately though the good flea products are prescription and will cost more than the ones you have used. I usually recommend any of Advantage, Revolution, Frontline or Comfortis. It is also really important that you treat all cats and dogs in the house and that you keep treating them fo...