The Tumblebug River Infestation is a 3-nest Crater Lake job on the back roads to Crater Lake. It pays Wizard Island and sits next to the Cascade Lakes Railway Ambush Camp and the Volcanic Legacy checkpoint.
Burn each nest with a Molotov or other fire, throwing from a distance with an exit open. Burning a nest draws the Freakers around it, and daylight means fewer of them are out.
The ambush camp to the north and the checkpoint to the southeast both pay Wizard Island. Clear all three in one run.
Rimview Ranch Infestation
The Rimview Ranch Infestation is a 3-nest Crater Lake job near a ranch and bed and breakfast. It pays Wizard Island, and clearing it makes the Rimview Ranch Horde show up in the region.
Berley Lake Infestation
The Berley Lake Infestation is a Lost Lake nest-clearing job with 4 nests to burn. It pays Iron Mike's Camp and sits near the Berley Lake Ambush Camp and the Santiam Tunnel checkpoint. You can clear all three in one trip.
Cascade Lakes Rail Line Infestation
The Cascade Lakes Rail Line Infestation is a Highway 97 nest-clearing job along the old rail line, with 5 nests to burn. It pays Diamond Lake, and Aspen Butte Ambush Camp lies just to the southwest.
Chemult College Infestation
The Chemult College Infestation is a 6-nest job at Chemult Community College, once a NERO refugee camp on Highway 97. It pays Diamond Lake and opens after the story mission You Couldn't Stop Shaking.