If at any time during testing, mosquitoes were seen to land on the skin but not bite (a sign of imminent failure of the repellent), then the interval between insertions was decreased to five minutes until the first bite was confirmed.
If at any time during testing, mosquitoes were seen to land on the skin but not bite (a sign of imminent failure of therepellent), then the interval between insertions was decreased to five minutes until the first bite was confirmed.