I've read a number of comments about capsules not working on this site. I had one a couple of days ago. The whole top came off the capsule and I didn't get the dusty feeling in my mouth so I took another and threw away the bad one. At about $5 a capsule that can get expensive for a senior on limited income. I wrote Spiriva but they haven't shown the decency to respond. Can the rest of you afford to just throw away bad capsules?