I have dehydrated peppers every year, cannot really tell you how long it takes, just usually fill dehydrator, plug it in outside, check on them the next morning, rotate racks around occasionally, go till they are dry. I don't think you can over dry them, I haven't. After they are dry I store them in zip lock bags and grind them with a coffee grinder that I have dedicated to spices and peppers as needed. They keep longer whole. I grind up a mixture of different peppers and fill a shaker as needed. great on everything!