Please note that our demonstration process is designed as a test for comparison purposes. During the demo, we do not blast an entire item but rather simulate the process to showcase its effectiveness and provide you with a clear understanding of the results you can expect. If you are unable to be present in person for the demonstration, we can arrange to film the entire process and email you the video. This way, you can still observe the demonstration remotely and gain insights into how our product performs. If you would like the tested parts returned to you, simply provide us with a return shipping label, and we will facilitate the return process.