Im struggling to get them to stick where I want them screws arent an option. 3M doesnt hold. The lights all needed their batteries repositioned upon arrival to get them to work, but once doing that, 4 out of 4 worked just fine. White light is quite yellow. If youve ever used or seen a yellow bulb as a bug deterrent, its that color. I wouldve liked something actually white, even if a warm white, but this is just yellow. Overall, itll do. It helps me not trip and fall at night on a yard pathway.