The Center for Disease Control and Prevention created an infographic showing how you can be proactive in avoiding bug bites. Although the media is focused on the Zika virus, it is important to remember that there are many insects you must protect yourself against while traveling.
Whether you are backpacking the Appalachian Trail or headed to the Caribbean for spring break, it is important to remember to protect yourself from all insects and not focus singularly on the mosquitoes carrying the Zika virus.
The CDC recommends spray that is at least 20% DEET. I have traveled to destinations before where repellent that contained the recommended level of DEET wasn't enough. While I left without illness, I was still sorry I didn't do more.