I have some glass mugs, and glasses, and cake carrier I want to put vinyl initials and dots on. I have th outside vinyl which is suppose to stick longer. Do these items need to be handwashed only? and will they stand up to handwashing. Also I have some car tags I want to put vinyl images on. These will stand up to rain, etc. correct? I am new at this so I am welcoming your comments. I wanted to enter a local craft show also. I want my products to stand up to what the people pay for. Would hate for them to by a cake carrier and everthing come off when you wash it.