PAIRS WITH ANY CAT WINDOW PERCH: K&H EZ Mount products mount to any smooth, non-porous surface using a super-strong suction cup system; this cat grass grow station pairs purr-fectly with any window cat hammock CAT GRASS FOR INDOOR CATS: Bring the outdoors to you indoor cat with the EZ Mount Window Cat Grass Growing Station; cat grass planter with cat grass seeds and soil pellets all in one: grows in 1-2 weeks HEALTHY BENEFITS: Eating natural, farmed in the USA, Non-GMO oat grass provides essential vitamins and minerals, supports healthy digestion, reduces hairballs, and protects your house plants (that can be toxic to your feline friend) EASY REFILL; Refreshing the grass is simple—just lift the cup from the ring and replace it with a new batch; each one includes 2 growing cups, one for now, one for later; refills are available separately COLORADO BRAND YOU TRUST: Designed by K&H with 25+ years of experience in creating safe, innovative, quality products for pets, ensuring safe reliability and top-tier craftsmanship for pet parents