Dehydrating Strawberries - Wax Paper or Parchment?
Instead of parchment or wax paper, why not aluminum foil? If you use the slider type of foil  (where one side is non-stick and food slides off easily), any juice released when dehydrated will also dry under the strawberries and stick to the dried berries, not the foil. I use it when dehydrating herbs in my oven. (I put a 100 watt incandescent bulb in the bulb socket and leave the light on. The temperature stays just under 120° F or about 50° C.)