Let me break down the best approach for those pesky nests (this is actually one of the most satisfying mechanics once you get it down). You'll want to unlock incendiary bolts first, which happens after clearing 8 ambush camps - and trust me, it's worth the effort because these bolts are much more efficient than molotovs. Each kerosene crafts three bolts instead of just one molotov, which really adds up when you're clearing multiple areas.

The beauty of these bolts is in their precision and range (something that becomes really valuable in later regions). During daytime, when freakers are less active, take aim directly at the nest's core - you don't even need to worry about the scattered freakers, since they'll scatter once the fire starts. This targeting approach works because the nest material is highly flammable, making each shot count.

Here's something interesting i've learned through experience - if you spot multiple nests clustered together, you can actually create a chain reaction of sorts. Position yourself with a good view of several nests, and time your shots well. Sometimes the fire actually spreads between really close nests, which saves both time and resources. And don't feel pressured to clear every nest immediately - you can always come back to them after finishing the main story, when you're better equipped and more experienced with handling freaker territories.