Unique Pet Care’s Puppy Odor + Stain Remover uses gentle but efficient probiotic bacteria and enzymes to remove odors and stains at their source, leaving behind only CO2 and water. There’s no masking or caustic chemicals. By eliminating pet pheromones, the product prevents re-soiling and is safe for puppy beds, kennels and pee pads, the company states. It is eco-friendly and made in the USA.