There are some areas where the old ways are best, some where it's a matter of preference, and some where new technology has real benefits.
I think that, when it comes to bug repellent, DEET is compelling, in comparison to the traditional, natural alternatives.
Yes, it melts plastic. Yes, there may be reasonable questions about its toxicity. But study after study (as well as my personal experiences) has shown DEET is the most effective bug repellent available.
And, it's not just a matter of comfort. Speaking as someone who nearly died from a dread disease picked up from a tick bite, speaking as someone who spent years paying off the medical bills associated with that incident, speaking as someone who still suffers a lot of possibly permanent damage from that incident, I urge you not to mess around with bites which could be carrying nasty diseases, not to mess around with using less than the most effective bug repellent available.
Even if it may be somewhat toxic, the consequences of the alternatives could be far worse.
Here's a pic of me, at the onset, before it got
REALLY bad. Keep this picture in mind, when you choose between traditional, natural bug repellents and modern ones: