Pedigree and Science Diet are both poor quality foods
. These foods are grain based and what little meat is in them, is inferior in quality.
Please read the threads in Nutrition & Grooming...the most often recommended foods here are Canidae (best priced out of all of the super premium foods), Innova, Wellness, California Natural, Natural Balance, EVO, Orijen,etc.
Google the names..and it will take you to their websites with store locators.
You may pay a bit more...but will need to feed far less food, as well as clean up less poop.
Gina