At what age can you de flea newborn puppies? Mine are 4 weeks old and i think they have fleas. Also can you de-flea the mother would it affect the pups??
You can use frontline spray from pups 2 weeks plus so that should work.
Main thing to remember though is that 90 percent of fleas live off the dog in the house/environment so to stop it becoming a constant issue you need to take on those.