You basically want to avoid dog treats that contain any of the following: Meat/Bone Meal (Chicken meal is fine - it's the unspecified things that are disgusting and should never be fed), Meat/Animal Derivatives, BHT/BHA, Ethoxyquin (All three are preservatives well known for their ability to cause cancers), Artficial junk (colourants), Garlic/onion, and things alike.
Also, just throwing this out there: Hamsters, after a certain age, become lactose INTOLERANT. So I'm totally baffled as to why so many people on a hamster forum have advised you to feed your hamster a milk product (and a horrendously low quality one at that). For that reason, no, no milk bones are ok. Could you list the ingredients of these bonios?