OK, I just bought a good Ultrasonic cleaner and am not having good results with it. So I thought lets start a thread focused on this tool. What are the Do's and Don'ts regarding Ultra Sonic Cleaner use. For instance, after searching through numerous threads, it seems people recommend using a mixture of Simple Green and Water. Also, apparently you DO NOT put any silk screened plastics in there. So, please share your experiences. Materials to put in there and not put in there. Mixtures which work best with particular types of materials. Recommended duration and temperatures. Etc..