I have been having a difficult time getting these things to stay in place. All the ads from Libre show these deliriously happy women showing off their sensors and there is no indication of added cover to help them stay in place. I have used Nexcare Tegaderm waterproof dressing and it worked for a day or so. I had to cut a circle of paper to prevent the disc from sticking to the patch. I then used "Breathable Gentle Wrap". It is a wrap-around bandage type that adheres to itself with a light pressure rather that using any adhesive and it seems to be working. Some people mentioned a "cover" that can be applied but don't explain it. On Amazon, there is a "Simpatch, a precut adhesive patch" that looks promising as it seems to be designed for the Libre Sensor and cost about 50c each. There is no indication to say whether or not it sticks to the sensor or just to the skin around it. The question is, how much more do I have to spend to find something that actually works? The people at Libre don't seem to want to help.