>> this one? >> it's a game to the dog. they're trying to find their toy. that's how -- that's how they're trained. after a while, they don't find anything, you get tired, you get bored. >> here, boy. >> that's why we try to hit the hot cells first. because after that, your success rate starts going down. >> good boy. hey. >> these searches often turn up some type of illegal substance. >> like a marijuana pen or joint, you got some of the marijuana here.?รท the balloons packed with marijuana. a syringe here. the crack pipes so they can smoke crack. >> a common item found during cell searches is pruno, a fermented alcohol drink made from shredded apples and kool-aid. >> i would say it would serve up to five or ten people all depending. some of the inmates actually even sell the pruno by the cup, whether they're selling it for bucks a cup or $10, or if it's white lightning, $25 to $50.