Petpost Tear Stain Wipes for Dogs use a powerful solution of plant-based ingredients to naturally remove and prevent tear stains. Pet parents with Maltese dogs, shih tzus, Chihuahuas, poodles and bichon fries are all too familiar with these reddish-brown stains caused by iron-rich tears and mucus. Most tear stain formulas only clean existing stains, even when used regularly. Petpost Tear Stain Wipes gently remove mucus and crust that's formed around the eye, lighten current stains and also help prevent future stains from forming. These presoaked pads contain a natural solution that's made from the highest quality plant-derived ingredients, so they won't cause irritation.