We have been using DEET for years to repel mosquitoes. The only problem is that, if used incorrectly, it becomes their favorite food

A Virginia Tech study found DEET can backfire if mosquitoes encounter it while feeding on blood.

Instead of repelling them, the scent may become linked to a food reward and make mosquitoes more attracted.

The finding suggests misuse, low residue, or poor reapplication can reduce protection.

The takeaway: follow label instructions closely and reapply repellents as directed.