I've heard it works great for mosquitoes, but never heard about ticks.
The Frontline works great for dogs, but personally, I wouldn't use it if at all possible.
I like the vinegar idea.
From the description.
Take cover. Sunblock and insect repellant combo moisturizes and protects skin from harmful rays, as well as shoos insects such as mosquitoes
and ticks that may transmit West Nile Virus and Lyme Disease. Moisturizes with aloe and vitamin E. Pleaseantly scented. Pediatrician and dermatologist-tested. DEET-Free. PABA-Free. Very water-resistant, sweat-resistant. SPF 30 UVA/UVB protection. 4 fl. oz.
You'd really rather smell like a cucumber salad?