Any dents around the lip of the top opening or bent lids would disqualify them. Lid seals are touchy enough without dents. Chipped plugs are also a stopper. Side dents don't matter. In fact, any damage around the top is a potential problem.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk