Meth Reclamation from Urine

Here's something new to me.

In some states, people have been arrested for processing the urine of methamphetamine users to obtain any amounts of meth that may have been excreted from the users’ bodies.

Frankly, I'm having a difficult time imagining how this occurs.

Let's see. The meth reclaimer follows the meth user around until it's time to urinate, holds out a plastic bag and says, "Please pee in here." I can't see it happening.

Meth users are fairly paranoid and jumpy as it is. A meth-head would likely go nuts having someone follow him/her around carrying a plastic bag and asking if it's time to piss. Hell, I'd go nuts and I don't use drugs.