I hope they are using muzzie sniffing dogs.
Bloodhounds...they are FLAWLESS.
I once had some freeze-dried liver bits in my down vest pocket. They were in TWO plastic bags, in my down vest.
All of a sudden this huge bloodhound (name Judy) came tearing down the hill, from 1/2 mile away, howling like crazy.
She ran STRAIGHT UP to me, looked at my pocket, sat down, looked at me, then at my pocket again. She had smelled those liver bits from 1/2 mile away!
Her owner came charging down the hill calling: "What ON EARTH do you have in your pocket?!" Lol.
WHAT a sniffer those doggies have. WHAT a gift from our Creator!