Susan,
it must be the luck of the draw??? Em & Chloe just chew their bones or toys... other than a few of Leah's Bratz dolls becoming amputees they haven't destroyed any of their/her toys.
Chloe still finds tissue paper earresistable when she can get her paws on it - she did try to chew on furniture when we first got her but Bitter Apple stopped that (noticed her breeder had a badly chewed dining room table

)
Sorry I have no trick for them not chewing to be able to pass on ...but if anyone knows how to stop Chloe from barking to hear herself bark
please let me know