Trout don't care what you throw at them when they're under the birds. That's why most anglers keep a "bird box." Old, discarded lures get tossed in the bird box because in the eyes of the trout any an all baits are wanted.
It doesn't matter what kind of failure those lures were previously, because no baits are unwanted by trout under the birds.
Read more at
http://evangler.com/2010/03/25/bird-box-baits/