Certainly not. The samples (equivalent to about 7 grains of salt) will be in great shape right up until the time they smash into the earth at terminal velocity.
Its just a matter of finding them now.
(sorry, sarcasm is coming too easily to me today)
grains of salt in a sea of sand.
Wonderful response.
I've got a particle eyedropper for aspiration purposes if anyone sees those little buggers just lying around.