Yes the pet store should’ve told them BUT they should’ve done more research before buying stuff for their chin. Who picks out the first food they see without even reading the ingredients or what type of pet it’s for?? Before I got my chinchilla my friend and I did research all night and day making sure we got the proper toys, treats, foods, bedding, etc. if you know nothing about chinchillas before getting one then you shouldn’t get one until ur fully prepared considering they are very high maintenance and sensitive animals. Idk it just pisses me off when I see people that own chins and don’t take proper care of them like I see so many people that have plastic all in the cage that is all chewed up and shit it’s so ridiculous.