Those date due cards have fewer than 20 lines, if I recall correctly. Either way, it really depends on the book. People can put library books through the ringer

Those date due cards have fewer than 20 lines, if I recall correctly. Either way, it really depends on the book. People can put library books through the ringer sometimes, but books are pretty durable. I'd say our collection loses less than 5% of its items to damage. We discard things for the more nebulous "condition" more often, but generally that's paired with some other criteria like not circulating or being out of date.