Josh's Frogs Melanogaster Fruit Fly Culture Kit (Makes 10 Cultures)Brand: Josh's Frogs Features: MEDIA RETAINS MOISTURE to keep the culture from drying out while also smelling fresh EXTREMELY NUTRITIOUS media with B vitamins, protein, omega fatty acids, antioxidants, trace minerals, and color enhances so that you can raise healthy, nutritious feeders for your pets GREATER SURFACE AREA provided by the Excelsior than coffee filters which yields more fruit flies FABRIC LIDS provide great airflow while not allowing flies