Extra Strong Suction Sups Window Bird Feeder with Drainage Holes,Windowsill Birdfeeders for Small Birds only,Acrylic Clear House Shape Design DURABLE SCREW SUCTION CUPS: By tightening the nut, it would pull up the center of the suction cup, the tighter the nut, the stronger the suction.. Compared to the 25% fall off rate of the old regular suction cups, the improved suction cups has only about 5% fall off rate. Suction cups that can hold up to 10 LBS. Easy to Fill and Clean:Easily refill seeds to the tray. You only need to remove the entire bird feeder when cleaning, and you can rinse with water or wipe the surface with a wet towel. Its ideal for backyards, or apartment windows.Equipped with 2 rods to attract birds, making them more comfortable to land on the bird feeder MOISTURE REMOVAL SYSTEM: Features precise laser-drilled drainage holes. this bird feeder effectively drains water in the tray after rainy and snowy days, which keeps the tray dry and prevents mold. the holes are designed big enough to drain out the water, but small enough that seeds dont pass through. CLEAR VIEWING DETAIL: Window bird feeders provides spectacuar view with clear acrylic and house shape Design, watch cardinals, blue jays, finches,small birds, juncos, chickadees, nuthatches, titmice, sparrows and more enjoy themselves through this completely see through, transparent feeder. PERFECT GIFT TO DELIGHT ANY AGE: Gift hour of amusement to anyone from young children to seniors living in retirement communities. Not only is house shape window bird feeders great backyard birding gift, bird lover gifts, but its also endless, unique gifts for parents, dads, moms and kids. Its like watching a nature channel, but so much better because its live