Culinary Coop's Professional Ceramic Heat Bulb provides radiant heat for your pets and livestock without emitting any light. The non-light producing heat source provides a heat source day and night, but does not affect the animals sleep cycle. A safe 24 hour heat cycle of needed. Produced with high-quality ceramic powder and high-quality glaze, twice baked for extra thickness. Use with Culinary Coop's Brooder Lamp or similar lamp rated for 150watts. Always use with a quality thermometer to avoid over or under heating your animals.