My family was having a special event in our backyard, and I feared the guests would be carried away by the mosquitoes. Tuxedo Mosquito showed up the evening before the event and sprayed extra well because the sky was about to open up. I feared all the heavy rain would have washed away the treatment, but even two weeks later (and many more downpours) I'm not seeing mosquitoes or being eaten alive by no-see-ums. I am beyond thrilled with the service and the quality of the treatment you use!