--- product_id: 17007041 title: "UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings" brand: "windowalert" price: "€ 38.11" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.hr/products/17007041-uv-liquid-marker-anti-collision-bird-deterrent-to-prevent-bird store_origin: HR region: Croatia --- # 3-month lasting protection UV reflective chemical formula Easy bingo marker application UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings **Brand:** windowalert **Price:** € 38.11 **Availability:** ✅ In Stock ## Summary > 🦜 Protect your windows, save the songbirds — stylish safety you can’t see but birds can’t ignore! ## Quick Answers - **What is this?** UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings by windowalert - **How much does it cost?** € 38.11 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/17007041-uv-liquid-marker-anti-collision-bird-deterrent-to-prevent-bird) ## Best For - windowalert enthusiasts ## Why This Product - Trusted windowalert brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Simple DIY Application:** Apply dime-sized dots with included marker—no professional help needed. - • **Complete Visual Barrier:** Fills gaps between decals for seamless, comprehensive bird strike prevention. - • **Invisible yet Impactful:** Dots dry clear, preserving your window’s sleek look while protecting birds. - • **Scientifically Engineered:** Developed after 2 years of research for optimal UV reflectivity and bird deterrence. - • **Eco-Friendly & Made in USA:** Supports local manufacturing and bird conservation with a non-toxic formula. ## Overview WindowAlert UV Liquid Marker is a scientifically developed, UV-reflective liquid designed to prevent bird collisions with glass windows and doors. Easy to apply with a bingo-style marker, the nearly invisible dots last up to 3 months and complement WindowAlert decals by filling visual gaps. Made in the USA, this eco-conscious product offers a simple, effective solution for bird-friendly homes and buildings. ## Description Introducing WindowAlert UV Liquid, the breakthrough solution in bird strike prevention. In the US alone, countless songbirds face peril each year due to window collisions, a problem now combated by this innovative product. After 2 years of meticulous chemical engineering, WindowAlert presents UV Liquid, the ultimate complement to our acclaimed window decals. Designed to seamlessly fill the gaps between decals, UV Liquid completes the visual barrier, ensuring comprehensive protection for wild birds around homes and buildings. Application is easy – use our specially designed bingo marker to create dots on window glass. These dots, nearly invisible once dry, last 4-6 months and can be effortlessly removed with standard window cleaners. Scientific studies recommend optimal protection by placing dots 4 inches apart horizontally and 2 inches apart vertically. UV Liquid may be used independently, without decals, providing flexibility in safeguarding our feathered friends. The 1 oz. bottle of UV Liquid is made in the USA, emphasizing our commitment to quality and environmental responsibility. To ensure effective application, adhere to the provided instructions. Apply only to an exterior glass surface free of overlays, tints, films, or coatings. Choose cool conditions for application, allowing the liquid to dry to clear. Clean the glass before application, ensuring it is free of chemicals and cleaners. The application process is simple: gently touch the UV Liquid marker to the glass, forming a dime-sized dot. Create a visual barrier across glass surfaces by applying WindowAlert decals and filling in the gaps with UV Liquid. The ultraviolet reflectivity will fade over time, necessitating reapplication every 4 months or testing with the WindowAlert UV Flashlight for best results. With a 12-month shelf life, this product ensures lasting protection for our avian companions. Take a stand against bird strikes with UV Liquid, a responsible choice for bird-friendly architecture. Review: UV Bingo Dauber works well and people do not see it - This is the only solution that I could find that people would not see. This takes a little practice to use, but when I didn't daub the UV "ink" perpendicular to the window, it worked fine. The dauber could be improved, as it's just a bingo ink dauber and we are definitely using this dauber on vertical surfaces! (Manufacturers, please think about this). The dots were so light that the house showed and sold even though I had removed the taut bird safety net and daubed the windows all over with this thing. Yes, you have to position it against a vertical window, but don't start by holding your dauber at a 90 degree angle to the window. You can feel the ink slogging inside, so start with the dauber at a 60 degree angle and move up to 90 kind a slow, and press the spongy part only as hard as you need to against the window. The ink can "slam" into the spongey thing inside if you don't slowly apply the sponge, and it flows out too much and drips. The design of the dauber could be improved. I can't wait until competitors make this cheaper, because it works as long as you apply dots close enough so birds don't think they can fly in between the dots (and into the window). There is a faint image of the dots, but unless you are looking at the *cleanliness* of your windows, you will not notice them. No one noticed ours. Not the realtors nor the house inspection guys. Review: Unfortunately, it doesn't work - I bought this liquid, along with the reflective butterfly decals after a dove flew into my window and died. This stuff was easy to apply, and you can't see it from the inside. The first day, we didn't have any bird strikes, and I was hoping they could see it and would stay away. Unfortunately the very next day, a mourning dove flew full force into our window and died. I felt terrible about it. It's a nice enough concept, but it doesn't work to keep the birds away from the window. I ended up hanging wind spinners and a wind chime from the top of our patio, and the movement has worked to keep the birds away. ## Features - Save the beautiful songbirds you love. WindowAlert UV Reflective Liquid acts as a deterrent for wild birds from flying into glass windows and sliding doors. - UV Liquid is designed to fill in the gaps between our decals on windows - providing complete protection. WindowAlert decals catch the attention of birds. UV Liquid completes the visual barrier. - WindowAlert UV Liquid is easy to apply. Simply use our bingo markers to make dots on outside window glass. The dots dry to virtually clear and are easy to remove. - Each bottle contains 1 ounce of WindowAlert UV Liquid and lasts three months. For best results, apply with WindowAlert UV Decals. WindowAlert UV Liquid is made in the USA. - UV Liquid was pioneered in Bend, Oregon after two years of chemical engineering research. WindowAlert is the trusted source for prevention of bird window strikes and window collisions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00CEC42FG | | Best Sellers Rank | #171,400 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #856 in Insect & Pest Repellent Sprays | | Brand | WINDOWALERT | | Brand Name | WINDOWALERT | | Customer Reviews | 3.6 out of 5 stars 596 Reviews | | Included Components | Marker | | Item Volume | 1 Fluid Ounces | | Item Weight | 2.3 Ounces | | Manufacturer | WindowAlert, Inc. | | Manufacturer Part Number | WINDAUV | | Number of Items | 1 | | Scent | Unscented | | Scent Name | Unscented | | Size | 1 Count (Pack of 1) | | UPC | 897681000104 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** WINDOWALERT - **Item Volume:** 1 Fluid Ounces - **Number of Items:** 1 - **Scent:** Unscented - **Unit Count:** 1.0 Count ## Images ![UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings - Image 1](https://m.media-amazon.com/images/I/71CQVjGlf3L.jpg) ![UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings - Image 2](https://m.media-amazon.com/images/I/61xMZa07nmL.jpg) ![UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings - Image 3](https://m.media-amazon.com/images/I/61qDDP36WNL.jpg) ![UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings - Image 4](https://m.media-amazon.com/images/I/71z7yXUtMIL.jpg) ![UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings - Image 5](https://m.media-amazon.com/images/I/41ojMwFixsL.jpg) ## Questions & Answers **Q: Will this work without direct sunlight, on a window that's under a shaded patio?** A: I believe it will - it worked for us on a row of windows under an eave. The principle is that the dots (that's how I used it...as dots on the cross-hatches of interior mullions, so cannot be seen from inside the house) are visible to birds although not so much to us - if enough light to cause a reflective surface generating bird strikes, there is enough to 'shine' ultraviolet for the birds. Was 100% effective in our application. **Q: Does the liquid last longer than the decals? Also, is the liquid effected by washing the window?** A: No, the liquid does not last longer than the decals, but it does last for several months here in Arizona. The decals last for a few years. I just reapply the liquid each time after I wash the windows and it works just as well if not better than the decals. It goes on quickly and dries in about a minute and a bottle goes a long, long way. It doesn't interfere with my view in or out of the windows, but at certain times of the day, I can see what I've drawn on the glass from both sides. I recommend the liquid and will buy it again to use together with decals. Not a single bird has hit the windows since I started using them. **Q: Does this product work on mirrored glass windows?** A: I don't know whether it works on mirrored glass, specifically. The liquid should be applied to the exterior surface. I just refreshed my 'dots' for the season and added some new stickers and haven't had a bird strike since the refresh. It's been easy to tell when the effectiveness wears off; unfortunately we start getting bird deaths again. I recommend a twice a year refresh. **Q: I know it's supposed to be applied on the outside, but will it work if i put it on the inside?** A: No. It needs to be on the outside to break up the reflection on the glass. ## Customer Reviews ### ⭐⭐⭐⭐⭐ UV Bingo Dauber works well and people do not see it *by T***M on July 19, 2021* This is the only solution that I could find that people would not see. This takes a little practice to use, but when I didn't daub the UV "ink" perpendicular to the window, it worked fine. The dauber could be improved, as it's just a bingo ink dauber and we are definitely using this dauber on vertical surfaces! (Manufacturers, please think about this). The dots were so light that the house showed and sold even though I had removed the taut bird safety net and daubed the windows all over with this thing. Yes, you have to position it against a vertical window, but don't start by holding your dauber at a 90 degree angle to the window. You can feel the ink slogging inside, so start with the dauber at a 60 degree angle and move up to 90 kind a slow, and press the spongy part only as hard as you need to against the window. The ink can "slam" into the spongey thing inside if you don't slowly apply the sponge, and it flows out too much and drips. The design of the dauber could be improved. I can't wait until competitors make this cheaper, because it works as long as you apply dots close enough so birds don't think they can fly in between the dots (and into the window). There is a faint image of the dots, but unless you are looking at the *cleanliness* of your windows, you will not notice them. No one noticed ours. Not the realtors nor the house inspection guys. ### ⭐ Unfortunately, it doesn't work *by D***M on September 20, 2014* I bought this liquid, along with the reflective butterfly decals after a dove flew into my window and died. This stuff was easy to apply, and you can't see it from the inside. The first day, we didn't have any bird strikes, and I was hoping they could see it and would stay away. Unfortunately the very next day, a mourning dove flew full force into our window and died. I felt terrible about it. It's a nice enough concept, but it doesn't work to keep the birds away from the window. I ended up hanging wind spinners and a wind chime from the top of our patio, and the movement has worked to keep the birds away. ### ⭐⭐⭐⭐⭐ barely visible to the human eye *by D***K on December 25, 2025* Barely visible ti the human eye but visible outside and there was immediate stop in bird collisions, Cheaper than collision tape although will wear off and have to be reapplied. My concerns about appearance were unfounded. Great temporary solution ## Frequently Bought Together - WindowAlert UV Liquid Marker | Anti-Collision Bird Deterrent to Prevent Bird Strikes on Windows and Glass Doors | Protect Wild Birds Around Homes and Buildings - WindowAlert Leaf Medley Anti-Collision Decal - UV-Reflective Window Decal to Protect Wild Birds from Glass Collisions 2-Pack - Made in The USA - WindowAlert UV Flashlight Tester - 395 Nanometer LED UV Black Light Flashlight - Easily Check the UV Coating of Your WindowAlert Decals --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/17007041-uv-liquid-marker-anti-collision-bird-deterrent-to-prevent-bird](https://www.desertcart.hr/products/17007041-uv-liquid-marker-anti-collision-bird-deterrent-to-prevent-bird) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-20*