As the August heat bakes the San Gabriel Valley, Country Club Area homeowners should brace for heightened activity from roof rats and Argentine ants. The dry conditions and 85°F average temperatures push these pests to seek out water and shelter, and our neighborhood's unique geography makes it a prime target. The Arroyo Seco corridor, which channels wildlife like opossums and raccoons into residential areas, also serves as a highway for roof rats, who are excellent climbers and will readily exploit the mature sycamores lining streets like Country Club Drive and the lush, irrigated turf of the golf course. These rats are drawn to the abundant harborage offered by the Spanish Revival and mid-century ranch homes built between the 1940s and 1960s, many of which have unsealed crawlspaces and expansive attics—perfect nesting sites. Meanwhile, Argentine ants are thriving in the moist microclimate created by the golf course's sprinklers and the well-watered gardens of the neighborhood. These ants are notorious for forming massive colonies that trail along foundation edges and invade homes in search of food and water, especially during the hot, dry spell. Warning signs include droppings or gnaw marks in the attic, scurrying noises in the walls at night, and persistent ant trails along the perimeter of your foundation, particularly near the property line adjacent to the golf course or the Arroyo. If you notice any of these signs, act quickly to seal entry points and eliminate moisture sources. Below are the top-rated San Gabriel exterminators who specialize in these specific seasonal threats.