Aerogard Tropical Strength - 6 hour protection against mosquitoes. - Also repels flies, sandflies, leeches, ticks and other annoying and biting insects. - Helps to protect you and your family against disease carrying insects including mosquitoes that may spread Malaria, Ross River Fever and Dengue Fever. Additional repellency can be gained by lightly spraying surfaces such as picnic rug, beach umbrella & towel.  View more