I am one of those unfortunate people which mosquitoes find irresistible. I live near water, so we tend to get lots of them in the summer and they would get me while I was asleep leaving me with horrid angry red itchy bites in the morning. One year it was particularly bad so we ordered one of these nets and it is fantastic.
Just screw the eyelet provided into your plasterboard ceiling (no need for a drill or anything) then attach the net. It is worth taking the net and holding it up above your bed before you screw into the ceiling to ensure the hoop is in the best place for you. You can adjust the length if the string to raise or lower the hoop. The hoop helps to keep the net from touching you, it works pretty well as long as you don't tend to sleep right near the edge of the bed. It covers our continental king size bed but still folds away into a surprisingly small pouch. When it looks grubby or dusty I give it the occasional wash in the washing machine, and when mosquito season is over, I pack it away in the pouch for next year. Ok when you finish with the net you are left with a small hole in the ceiling where the eyelet was, but in my opinion that is a small price to pay for a mosquito free night!