Sawyer Fisherman's Formula Picaridin 4 oz (6 Pack) Picaridin is more effective at repelling biting flies than DEET Sawyer's 20% Picaridin is virtually odorless; it even has a mild citrus scent added to it which evaporates when dry Sawyer Picaridin Repellent will not harm gear or equipment Effective for up to 12 hours (Spray) Use with confidence on the whole family