Reptile Terrarium Substrate Liner – 24"x18" Waterproof Mesh Barrier for Snakes, Lizards, Turtles & Amphibians

Protect your pet and maintain a cleaner habitat with the CTWPets Terrarium Substrate Barrier—an essential liner designed to separate loose substrate from your reptile’s living space. Measuring 24" x 18", this high-quality mesh sheet is made from durable, waterproof polyester fabric that resists tearing and holds up against moisture, movement, and daily wear. Perfect for use under sand, soil, bark, or other loose bedding, the liner prevents substrate from slipping into areas like under-basin heaters, hides, or water bowls—helping maintain airflow and keeping your setup tidy. It’s also easy to trim and shape, making it a flexible solution for terrariums of all sizes and layouts. Whether you’re housing snakes, bearded dragons, geckos, turtles, or amphibians, this substrate guard adds a layer of protection and peace of mind to any enclosure.