Since the first option doesn't cut it, there are numerous commercial repellents on the market. Most of them are DEET based. There are many good creams but they need to be reapplied more frequently. This has been successful, except when I bend over and expose my lower back where the jacket rides up. If you go this way, make sure the garments are very baggy.
Many bugs have long stingers that easily penetrate tight fitting netting.
Remember, the higher the elevation, the greater the intensity of the sun. In sunny conditions, wear light-colored clothing and cover exposed skin, at least, with SPF rated sunscreen appropriate for you, at least 15. Wear coverings over the neck and ears.