Keep your worms environment perfect with the Worm Compost Thermometer. The thermometer has a 8" probe that you stick into your worm bin to measure the temperature of the food / bedding mixture. It gives a readout between 32 and 125 degrees Fahrenheit and is color-coded to with the optimal temperature zones for worm composting. Simply glance at the thermometer and you will instantly know what action you should take to maintain the worms' environment.
No batteries required.