I think it would work, but I wouldn't run it through with detergent in there. Or if you thought it really needed detergent, then only use a little. After it is done I'd sacrifice a gallon or 2 of distilled water to really pour into it and shake out. Its not the water that kills electronics, its the water contacting other things that dissolve in it and make the water conductive. After thoroughly rinsing it I'd set it in the back window of a car for a day. Alternatively, if your oven has a temperature setting below 200F you could just bake it for a couple hours (checking on it often, the plastic should hold up as long as you keep the temp pretty low).