I'd think any homeless type camp would have all kinds of drugs around it in the dirt. This is as useful as when the cops used to take people's cash by doing che

I'd think any homeless type camp would have all kinds of drugs around it in the dirt. This is as useful as when the cops used to take people's cash by doing checks for cocaine. Guess what, they pretty much always test positive for cocaine (90% in 2009, https://www.nationalgeographic.com/science/article/cocaine-on-money-drug-found-on-90-of-us-bills https://www.nationalgeographic.com/science/article/cocaine-o...). Also true for drug tests on people in some cases (https://johnhelms.attorney/police-still-using-inaccurate-drug-field-tests/ https://johnhelms.attorney/police-still-using-inaccurate-dru...). I'd believe that some law enforcement wants to have tests that almost always test positive, just like drug dog checking just does what the handler wants, because it is convenient to get people arrested when they want to.