Dettol - if you go straight from dettol to water, the old paint forms a sticky stretchable gunk which is a bugger to shift (which is why Billy says don't do it) but you can immediately drop the piece straight into another jam jar full of diluted washing-up liquid water for 10 minutes after which it can be easily rinsed under the tap.
I've left hard plastic (i.e. injection moulded styrene) in Dettol for weeks at a time with no adverse effects.
Coop
I've left hard plastic (i.e. injection moulded styrene) in Dettol for weeks at a time with no adverse effects.
Coop