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Hundreds of pills checked by the volunteer drug-testing organisation Know Your Stuff over the last few days have revealed a particular nasty that was prominent last summer, appears to be on the decline.
N-ethylpentylone - part of the bath salts family - was found in about a quarter of drugs that people believed to be MDMA - or ecstasy - last year, but this year it's virtually disappeared.
Leigh-Marama McLachlan speaks with Know Your Stuff NZ director Wendy Allison about what else they've found.