If the suction cup has become flattened or deformed, place it carefully in hot water for 2-3 minutes. This will help ‘make it more flexible, allowing it to return to its normal shape.

Creation Consumer Finance Ltd is authorised and regulated by the Financial Conduct Authority (Register no. 311518). It does a great job, but can depend on window type and other factors - but I am super sensitive to light! You can safely apply a Gro Anywhere Blind to normal single or double-glazed windows in good condition. We’ve been using it every single night for three weeks now and it has stopped our three-year-old from coming into our room early in the morning.Make sure the window you want to attach the blind to is clean, especially where you’re going to attach the suction cups. To improve suction and help keep the seal tight, dampen your fingertip with water and lightly moisten the inner rim of the suction cup. This helps create a tighter seal. The key is to not get too much moisture… just barely enough to coat the surface. John Lewis plc, registered office: 171 Victoria Street, London SW1E 5NN. Authorised and regulated by the Financial Conduct Authority (Register no. 724309) for the purpose of introducing the credit provided by Creation Consumer Finance Ltd, registered office: Wellington Buildings, 2-4 Wellington Street, Belfast BT1 6HT. We bought a lovely one from Dunelm which has glow in the dark stars. It's a child safe one with no cord dangling” (Recommended by Mumsnetter Enicat5) Our verdict

Starting with the upper corner of the window, work across the top first, then down the sides, and finally along the bottom. As you can see a small amount of light leaks around the edges but the room remains way darker than without the blind and it’s great for young kids who don’t nap on sunny daysThe suction cups may need to be ‘burped’ periodically by pressing down on them to remove any air that may have seeped in. Easy to adjust: The fastenings allow you to adjust the size of the blind to fit any window up to a maximum of 130 x 198cm (51x78in). The blind can be reduced to around a third of its maximum size Press the center of each suction cup all the way down firmly to the glass and keep firm pressure for about 15 seconds. Then gently release the pressure until all the air bubbles inside are released, to firmly seal the cups to the surface. You’re trying to push all of air trapped between the suction cup and the window out from behind the suction cup. Try not to let the suction cups slide. If they slide easily you might have used too much moisture. I suppose this is inevitable if you have to resize the blind as the pleats tend to gape out a little bit from the glass, allowing light to spill inside.

Moisten the inner rim of the suction. A bit of water on your finger is the most common way. Please remember not to moisten the rim too much! Just enough to coat the surface of the rim - if the suction cups slide after pressing down, you have used too much waterPlease do not pull on the blind to remove it from your window. Not only do you risk damaging the blind and eyelets, but you could damage the window itself. I found I needed to fasten together around three along the width to make it fit my daughter’s bedroom and two to bring the height down for the window in her room, which is quite small. So just to be safe, I remove the blind every morning after my girls have woken up. I like to let light into the room during the daytime anyway. Sleeptight Blind: What you need to know To enhance suction and help keep the seal tight, dampen your fingertip with water and lightly moisten the inner rim of the suction cup. Bloc blinds. You fit a frame round the window (it’s easy!) the blind fits in and it’s total bloc out. It’s also cordless so no worries about safety.” (Recommended by Mumsnetter halfstonehomerun) Our verdict

After a little research it seems that this is a possibility if the window already has some weakness and you use the blind constantly without giving the window any time to “breathe” and cool down. Clean the window you with soap and water. De-grease the glass with rubbing alcohol if necessary. Ordinary bathroom orwindow cleaners can leave a residue. Wipe clean with a soft lint-free cloth. If you have needed to resize the blind then you may just need to smooth the fabric out a little around the edges to cover any bits of light peaking through. Starting with an upper corner of the window, work across the top first, then down the sides, and finally along the bottom. If necessary, wash the suction cups with warm, soapy water, rinse and pat them dry with a lint-free cloth.. Make sure both the inside of the suction cups and your window are clean and dry before application.Large items (delivered by two people, such as appliances and furniture) can be returned using our Home Collection service. Press the centre of each suction cup all the way down firmly to the glass and keep firm pressure for about 15 seconds. Then gently release the pressure until all the air bubbles inside are released, to firmly seal the cups to the surface. You’re trying to push all of air trapped between the suction cup and the window out from behind the suction cup. Try not to let the suction cups slide. If they slide easily you might have used too much moisture. These blinds are perfect for babies, toddlers and pre-schoolers who are struggling with a bedroom that’s too bright in the mornings or evenings.