The Holua campground at Haleakala National Park will be closed on the nights of Sept. 8 and 22.  to treat the area to control an infestation of ants, particularly by the Argentine Ant.

The Argentine Ant is an aggressive and dangerous invasive species that is native to South America and is a nuisance to humans, park officials said. The ants were originally found in relatively small areas of Haleakala, but are now spreading.

Backcountry camping permits for Holua campground will not be issued for Sept. 8 or 22.  

Park managers will treat the Holua campground and area around the cabins with ant poisons that have little to no odor and are extremely low to non-toxic to humans and non-target animals.  

Treatment notice signs will be posted in the area.  Visitors planning to hike near the Holua area during these days are encouraged to use other on-trail areas for resting spots.