I try to clean my toys asap after use. If we're using them at night, sometimes we fall asleep, and then I clean them in the morning.
This morning I found a probe behind my husband's pillow, wedged between the mattress and the inside of the bed that we must have left there two nights ago and forgot about. I know he was looking for it last night, and just gave up and grabbed the Love Pacifier for me instead.
The damn thing was hiding! It got washed as soon as I found it. I don't think I've ever left a toy that long before. But, it is made of hard ABS plastic, so it isn't porous, but still.....