Yeah they same thing kills all of the gadgets for me... None of them are dishwasher safe. I can understand why, but with two kids and at least two to four loads of dishes a day I cannot have more hand wash dishes.

Also for a lot less money you can just have a plug in heating coaster. I think they are something like $15 and for that price you could have four or five placed around your house for the price of one mug...