Sentinel says it protects against flea, tick, and heartworm. It is a pill they chew up and take with a meal. Does she also need a topical flea medication?

I just put advantage flea medicine on my puppy and it dried within a few minutes. Did it come off or is it supposed to do this?
Some said there is a greasy look, but he’s black so I can’t tell. =/

I have a 7 month old kitty and was wondering if there was a better flea preventive than the topical kind; kind of like the comfortis for dogs? I seem to have the hardest time getting the topical in the right spot. She sits still long enough for me to find her shoulder blades and part her fur, but she moves as soon as i go to squeeze the tube and it ends up somewhere else. Is there anything else out there?

The monthly flea & tick medicine is a common kind, prescribed by the vet, that comes as a liquid in something resembling an eyedropper that you put on the dog’s skin, between the shoulder blades. It’s supposed to absorb into the skin and protect from fleas and ticks. I’m worried that if I give her a bath, it will wash the medicine out of her skin. After applying the medicine, how long should I wait before giving her a bath?

Thanks!

My puppy is a four month old Shih Tzu. I used Advantage on him on top of flea shampoo every other week. He still have fleas. Some people suggested flea spray to treat the house. What can I use that is safe in case he licks at the treated area?