Use it in conjunction with a Barracuda or similar. The warm water stays on top and the coldest water is sucked from the bottom. It then turns your pool into a giant mosquito trap because of surface tension from this product. I’ll am amazed how many mozzies it has caught. Then periodically remove barracuda and the flap sucks the mozzies into skimmer box!
Sending us help, but perhaps doesn’t last as long as it says package. I would say it gives you 1 to 2 weeks. Nonetheless still recommend it is relatively cheap and still looks far better than a pool cover. And is far less hassle.