Up until recently, the top of the washing machine has been my wet area for all darkroom processes. Up until now, I have been pretty careful to ensure that spills are cleaned up straight away.... Well, as advised (not very welcomely by the wife), I have managed to spill and leave some dev (I am assuming, as its a deepish brown stain) on the washer. This has stained the plastics. What would be the best way of removing this stain? I have tried a bit of bleach (wet a cloth with some laundry bleach and let it sit for 5 minutes), but it has barely touched it. Cheers in advance!