Most of my smoking is on my back deck / around the yard. Not afraid to just ash on the deck. Butt gets tossed in the bushes. I do use my concrete ashtray in my quiet times sitting in my chair on the deck smoking sessions. I try to empty every night into a small steel trash can with lid before I go in. If I don’t and it rains, it makes a mess of my ashtray. Wet ash can become hardened and difficult to clean out. In fact, I’ve used a paste made of ash to repair a hole in the bottom of a pipe. After I empty the ashtray, I turn it upside down so it doesn’t fill with water in case of rain.