It's a new concept in electric birdbath deicers or dog water dish deicers, the Solar Sipper Water Warmers, the latest of our unique line of safe, environmentally responsible water products for animals, to make sure you add drinking water beside your feeder or food bowl. Since 1985 our company has developed the original passive solar water container for wild birds, then a more powerful greenhouse solar heated model, followed by a solar container especially designed for pets and wildlife, a window mounted version that allows easy refilling from inside the house, and now, for cloudy days, a cordless electric heater for safe use with Solar Sippers or any water container favored by birds, dog, cats or wildlife. Remember to 'wet their whistles^®'. Wild birds and pets need water as well as food and what could be a simpler, safer and more inexpensive way than a Solar Sipper Water Warmer with a couple of drugstore flashlight batteries?"