Three to Four Pound Purina Dog Chow for $2.25 at the Dollar General through 12/30! Posted by Harbor Master on 26 December 2017, 2:12 pm Tweet Expired Through 12/30, The Dollar General has 3.5lb Dog Chow/Naturals or 4lb Complete or Puppy Chow priced at $4.50. Buy two for $9 and use the Buy One Get One Free Dollar General coupon and pay $4.50 for both or $2.25 each! Click here to add a Dollar General coupon for Buy one 3.5 lb – 4 lb bag of Dog Chow Dry Dog Food, get one 3.5 lb – 4 lb bag of Dog Chow Dry Dog Food FREE (Up to $4.50)