To give it a fighting chance, I bought my 2nd bottle of Repel 100 Insect Repellent last summer. To say that the mosquitoes are HORRENDOUS on my 4 acres would be an understatement and a half. I am an avid gardener and stay outside from sunup until hours past sundown. I wanted it to work, badly. However, the 2nd chance was just as much a flop as the first. I understand that every person is different. But, for me, it was a NO GO!