New Year’s Eve revellers planning to take drugs at festivals in Perth will get the chance to throw them into amnesty bins, no questions asked, after WA Police Commissioner Chris Dawson intervened to reverse an earlier decision.

The decision to deploy the bins at three city festival venues comes days after WA Police Commander Greg Knott said the bins would not be used at the two-day Origin Fields Festival at Langley Park.

Police Minister Michelle Roberts and Commissioner Chris Dawson backflip on the decision to scrap amnesty bins at Perth's music festivals. Credit:Nine News

Mr Knott said the last time drug amnesty bins were used in Perth was at Origin in December 2018 when just 12 capsules were deposited, proving it not a good option to tackle the drug problem.

A recent parliamentary inquiry into alternate ways of reducing illicit drug use revealed that of those 12 capsules, eight tested positive to MDMA, while the four others tested “inconclusive”.