Odor Free: The Nevink dog waste trash can is made of stainless steel. Unlike plastic, stainless steel is not porous and keeps the smell shielded inside. This dog poop trash can odor control also has brackets under the lid to hold odor absorbing, charcoal filters. Each filter has ~2-month life and each dog poop bin is shipped with 3-filters. Replacement filters for Nevink can be bought on Amazon. Perfect Size: The 5-liter or 1.3-gallon capacity waste bin truly is the perfect size. Great for either indoors or outdoors! A 20-Liter can is too large and isn't as visually appealing. Works With Pooper Scooper or Dog Poop Bags: Either dump the pet waste directly into the waste container from a poop scooper or drop filled doggie bags into the outdoor waste bin for dog poop after your walk. Portable: Nevink's removable inner dog poop bucket with carrying handle gives you the option to take the bucket with you as you scoop up your yard.