Fresh Water is Always Available with Le Bistro Automatic Waterers Le Bistro Automatic Waterers are specially designed to provide a steady flow of water for up to seven days. The base is constructed of durable polyethylene, making it crack and chew-resistant. Because the reservoir is transparent, you'll know at a glance when it's time to refill. Great for indoor or outdoor use, and they're easy to clean. Now made with Microban® for antimicrobial protection against bacteria, mold, and mildew. Two quart size.