This is an eco-friendly 4-tray worm factory.</p> </p>Composting with worms allows you to turn kitchen scraps, paper waste and  cardboard into nutrient-rich soil for your plants. With our worm factory, the entire process becomes quicker and easier. Simply add a handful of worms and your  organic waste to the bottom tray. The worms will start processing the  food. Once the bottom tray is filled, add another tray. The worms migrate  upward to the newest food source leaving the bottom tray full of  nutrient-rich compost. As waste is broken down, moisture filters through  the system, taking nutrient-rich particles with it. This makes it  possible to harvest organic liquid fertilizer right from the spigot.</p> </p>Delivery includes a 4-tray worm factory and worm bedding.</p><ul> <li>Dimensions (overall): 15.7" x 15.7" x 21.7" (L x W x H)</li> <li>Dimensions (each tray): 14.4" x 14.4" x 4.9" (L x W x H)</li> <li>Material: HDPE plastic </li> <li>Color: green </li> </ul><br>Specifications:<br>-