The best tick spray i have ever used is, permanone tick spray by repel
and coulstons. This stuff works, i have been using it since 1998.
You treat your clothes outside, and let them dry for 6-8 hrs. Do not treat clothes while they are on yourself.
It drys to scent free,and last 2-4 weeks.
You can get it in the camping section of walmart.
I used to have alot of ticks on me while bowhunting, not anymore, with this stuff.
Good luck guys.