I've had 2 of this type and brand window birdfeeder for about 12-13 years. Mine have many cracks that I either had to package tape (strong tape) or glued its seam cracks with super glue. They last a very long time PROVIDING that they are not dropped, as they very well may crack or shatter when they hit the ground and roll, especially when it's from a 2nd or 3rd floor (2nd floor for me). Too, it's better to use GEL super glue, it's thicker than regular super glue) just squeeze along the INNER seams and let it dry. Before hanging on your window wash it with just dish soap and water to get the super glue scent off the birdfeeder as birds won't like the smell of it, thereby defeating the whole purpose. You want to make sure it won't be sticky with the super glue GEL still as that would certainly be toxic for birds. When done gluing and washing out air dry the birdfeeder or wipe it out with a clean towel or paper towel. Double sided flexible clear gel tape: It is 2mm thick and bendy/flexible. I'm showing the brand and type that I used to go with my two birdfeeder's window suction cups that I just bought on Amazon from another vendor. I like how the double sided tape is so soft, flexible, and it's easy to use scissors to do clean cuts. Also the thin clear film on the inner side (when on the roll) it pulls off easily to apply. I used this double sided flexible tape for the backside of the suction cups for my two new bird feeders. I was tired of my feeder falling off and breaking on the ground then having to glue and/or use packaging tape to keep the two halves together (not a clean look after doing that btw). This clear double sided flexible gel tape though, so far is staying on my windows, and I can't see it. I cut to the width of the suction cups and stuck it to the side that will be going against the window, and then I trimmed the tape's edge to the same shape as the suction cups with scissors, then took off the thin film and just pressed it onto the suction cups (as you would normally do but without double sided tape) and it is almost invisible! In my provided photos one feeder is in the sun on one side of my house, and the other feeder is on the shaded side of my house, both are still sticking to the windows, going on 6 days now. Hopefully the double sided tape will work just the same in winter. Alaska gets the dry/subzero temps and sometimes the regular suction cups without tape would fall off even sooner. I've even used just a drop of vegetable oil and smeared on both cups that go onto the window, but there, they stay on longer but those eventually fall off. I will update my review when Alaska gets into our subzero temperatures. Right now it is June 20, 2022 and the temp is 72 in shade, 75 light & shade, and about 100 in the sunlight. For outdoor temp accuracy, I have suction cup thermometers on different windows around my house. Also, if your window suction cups get bent or too dried up from age and/or weather, this also affects their suction cup ability and will likely come off. Hopefully this double sided flexible clear tape idea will fix that all-too-common problem. IMPORTANT NOTE: For other applications using this double sided flexible clear gel tape DO NOT put this tape on painted walls, or say that fake sticker paper: a veneer-look that's typically on glue chip board furniture that's made to look like wood, but is only sticker paper. This is pretty strong and IT WILL pull off paper and paint on walls. However, it sticks and pulls off of glass windows pretty easy, at first, in case you have to reapply. But after awhile, I'm not sure, it may have a hard time coming up. I just bought the flexible clear double sided tape, it works great so far after two days! That's sun, wind, rain and birds perching in it. I'm surprised my idea worked, the flexi gel clear tape on the suction cups is almost invisible. Look close if you can zoom on the photos that I've provided with my birdfeeder review. To anyone that doesn't want their window feeder to fall off their window and crack or completely bust, I hope this idea eliminates that and was helpful. If you want to give this flexible clear double sided gel tape a try, it can be found here on Amazon at: https://www.amazon.com/Duty%EF%BC%8849-5FT%EF%BC%89-UALAU-Traceless-Removable-Washable/dp/B08P2XSH8H Or copy and paste this into your Amazon search: Double Sided Tape Heavy Duty（49.5FT）- UALAU Traceless Removable Washable Nano Gel Grip Tape, Clear Sticky Adhesive Mounting Tape for Home/Office/Car Decor, Fix Carpet Mats
