That explains:
Mr. Wilks’s team found a single sheet with 10 different concoctions sprayed onto it — a mix of opioids, depressants, cannabinoids and stimulants all jumbled together on the same page, like a Rosetta Stone of synthetic drugs. Scientists were baffled and alarmed: Why would anyone spray so many different, lethal substances onto a single piece of paper?
The specialized labs needed to run the tests often took months to send back mind-boggling chemical formulas
Follow the "NOT money": is it only the poor inmates that die? Presumably the richer inmates can source safer drugs for themselves.
Lethality might even be the goal: a simple signal that doesn't need covert back-channels. If you regularly send a drug test into prison then you might not even need to know who it was given to (assuming nobody hoards the drugs longer than the period between sending in the samples).
Yes, because drug dogs are largely a sham
>The report stated that prohibited drugs were found in only 26% of searches following an indication by a drug sniffer dog. Of these, 84% were for small amounts of cannabis deemed for personal use.
https://www.ombo.nsw.gov.au/reports/report-to-parliament/pol...