Simple Solution Washable Female Dog Diapers are the perfect answer for dogs experiencing excitable urinary, incontinence, or female dogs in heat and puppy training. Each diaper is reusable and lined with a soft plaid flannel fabric for comfort fit as well as an absorbent mesh liner for leakage protection. For light seasonal flow or minor excitable urination, the diapers may be used alone. For heavy seasonal flow or more serious cases of urination, simply attach a Simple Solutions diaper liner to the diaper's built-in mesh liner. Machine washable on gentle cycle, hang to dry. To insure a proper fit for the anatomy of your dog, choose the next size up.before use: Try on for size. Wash diaper for optimum performance. The more you wash it, the softer and more absorbent it becomes. Simple Solution Diapers are easy to wash and dry! Attach the adjustable strips to prevent snagging, wash the diaper separately in warm water on the gentle cycle and line dry. To completely remove stains and odors, you'll need a cleaner with both Pro-Bacteria and enzymes.