I have gone through my first order of 100 bags and bought the dispenser box with 200 bags.  I love my Shiba Inu and I make sure his dry dog food and treats never vary.  Even then, I never know on any given morning or afternoon walk what his poop will be like so I am so fortunate to have these bags which are so large, durable and easy to use.  I especially like that you can't see anything once you tie these Mutt Mitts up so I no longer have to walk around with a see-through plastic bag filled with poop!