I use to use dehydrators. Most of them seem to use heat. Smoke is good but most people use too much and it becomes too smoking tasting to me. Not my favorite method. I usually wait till the temp outside is nice so I can open the windows. I have some corrugated metal roofing that I spent way to much time on, drilling holes in it. I stack them and tie them around a box fan and aim it outside for hours. Temp and humidity levels can drastically change how long to leave it going. I haven’t had better jerky. Of course personal preference on spices and marinades will vary. I like mine with a little heat. The wife and kids not so much.