If you prefer a more regular flea treatment regimen, flea spray or drops may be ideal. (hartzflea.com)
It is important to rule out food allergies with a trial, also be vigilant with regular flea treatment. (dogsbarn.com)
But according to Adelaide Animal Hospitals, if the puppy is older than 8 weeks, it's old enough to use regular flea treatments as long as the product is appropriate for the size of the animal. (hartzflea.com)