it sounds like you are doing the right thing. not to discount your worries but have i got a story for you! my dogs (rotties) are constantly ingesting things they shouldn't despite the fact that i watch them constantly (sometimes i can't get to them before they swallow). my female will usually puke up anything that won't digest (toys parts, chestnut hulls, comforter fabric, etc). my male apparently has a stomach of steel. we spent the better part of last sunday at the emergency vet because aspen ate a sock! a whole sock! the funny thing? i have told my fiancee a thousand times to pick up after himself turns out the vet just made aspen throw up and up came the sock (thank goodness) as well as some toy stuffing, gumabone particles etc. he is a shark i am glad we got to it in time so that poor aspen did not need surgery.