We normally buy a different brand of dog treats than Pedigree though I thought I would try them as there was a $2 coupon available for packages under 6 ounces and Wal-Mart did not have Greenies. I did not read the ingredients in their Dentastix beforehand. Our dog who travels with us in a semi truck and is very healthy threw up twice. I read the ingredients and there are two food dyes. Not sure why as color does not matter to Lil Bit or myself. She has had no other new diet changes. I believe she became sick from the dyes and will not purchase Pedigree again and will give the above info to others. IF they remove the dyes I will consider trying the product again though I am not inclined to use our dog as a laboratory rat.