 Dr. P, how easy is the device when it comes to cleaning it? Ridiculously easy, Dr. P. Ridiculously easy. The inside, I rarely ever clean every inside there, because everything's contained in. So inside there maybe once every three, four years, I grab a little Q-tips and put a little isoprol. And just go like this, like takes five seconds, ten seconds. The hardest part of cleaning is that these guys, and all I do with these guys is, these things come with two or three of these things. I think they come with two, the last one I bought. These are the two they come with. I just clean these this morning, right? These get dirty, right? But the way you clean these is you take isopropyl alcohol, 99%, take salt, put it in a bag, okay, and put these inside, and just, you don't need too much isopropanol, you just need to cover them, right? So in a plastic bag, you just cover them, put salt in there, grab them, and then just shake inside the bag. Shake, shake, shake, shake, shake, shake, shake, shake. Put it down, let it sit for five minutes, ten minutes. Come back, shake, shake, shake. Do this for about 45 minutes, maximum an hour, and then bring them out, and just give them a rinse, it'll come out almost like this. If inside you see little things sticking there, all you do is grab in your kitchen, if you have one of those thin bristles, you just put them in there, go, and it comes out. Like I just cleaned these this morning. Here, this one still has a water droplet in there. See, inside? I just gave them a rinse. See that? Let's see. Oh, come on. We're focusing before. And that's inside, right? So let's use the bigger one.