Bug Zappers with the UV light work well at getting rid of other bugs that are attracted to the light however the bug zappers don't really work well for mosquitoes and in fact the bug zappers can attract more mosquitoes to your yard.
You need a Mosquito trapper made specific for mosquitoes such as one that uses propane to attract the mosquitoes and then it sucks them in and kills them.
You need what's called a Mosquito Magnet that uses Propane and although they are expensive they do work as advertised and can keep mosquitoes away from yourself and your yard.