If you can hire a lifeguard to be able to sit by your pool and watch it like a hawk throughout the day, all night, and every day, by all means, skip pool safety walls or mesh pool nets. For the rest of us, though, safety measures are a must. Whether or not you have children, whether you have a great in-ground or above-ground pool area, and whether everyone in the household knows how to swim not really, a fence is essential. Pool Guard USA