Living next to the Puente Hills Preserve
The Hacienda Hills trail area is part of the Puente Hills Preserve, managed by the Puente Hills Habitat Preservation Authority. The preserve supports coyotes, bobcats and deer — and the same brush and oak cover is the kind of habitat where rodents such as roof rats and deer mice thrive. When dry months thin the hillside food supply, rodents follow fence lines and overhanging branches toward irrigated yards, fruit trees and warm attics.
That is why rodent work in Hacienda Heights starts at the property edge, not in the kitchen. A house that backs onto open space needs its roofline and foundation sealed, because the pressure never fully goes away.
Sources: [5]
What a 1968 house means for pests
Census data puts the median Hacienda Heights home at 1968. After more than half a century, the weak points are predictable: gable and foundation vents with torn screens, gaps under low-pitched tile roofs, worn weatherstripping on attached garages, and plumbing penetrations under sinks that were never re-sealed after a remodel.
Those gaps let roof rats into attics and give German cockroaches a protected path between walls, kitchens and bathrooms. Finding and closing them is usually what separates a one-time fix from a problem that comes back every fall.
Sources: [4]
Mosquitoes and West Nile virus have been confirmed here
In June 2020 the Greater Los Angeles County Vector Control District announced that the county's first West Nile–positive mosquito sample of the year came from a trap in Hacienda Heights (ZIP 91745). In July 2022 the district again listed Hacienda Heights among the communities with new positive samples, first detected on June 30.
The district handles mosquito surveillance and treatment, and it asks residents to dump standing water weekly — rain gutters, plant saucers, buckets, unused pools — and to report neglected green pools. During our inspections we point out the standing-water spots we find, because the same damp areas also draw cockroaches and ants.
Sources: [1][2]
Rats, fleas and the county's record typhus year
Los Angeles County Public Health reported 220 flea-borne typhus cases in 2025, the highest count on record, with nearly nine in ten patients hospitalized. The fleas that spread it ride on rats, opossums and stray cats, so the county recommends year-round flea control for pets and blocking wildlife from getting under decks and into attics.
This is a county-wide figure, not a Hacienda Heights statistic — but homes next to open space and fruit trees are exactly where rodents and opossums move between yards. Rodent exclusion and flea treatment work best when they are planned together.
Sources: [3]
Service in English, Spanish and Chinese-language resources
Hacienda Heights is one of the most multilingual communities we serve: about 30% of residents speak Spanish at home and about 25% speak Chinese, according to the Census. Our technicians work in English and Spanish, and our website is also available in Simplified Chinese at pespro.com/zh.
Sources: [4]
