First, I love these bags and this company. I found these bags last year and I have used them ever since. I have to confess I used to use plastic bags from the grocery store to pick up after Toby Roo. Then I happen to come across this great co. out of Chicago. The bags are biodegradable and made out of corn and other renewable products. The first time I ordered from them I got the "sample poop bags" (assortment of different sizes). Poop bags offers free shipping and they are very affordable. There are also cat pan liners and bag holders. Check out their website. www.poopbags.com