Houses, duplexes, apartments and mobile homes on the same streets
Census estimates describe a mixed housing stock: 8,946 detached houses (53% of homes), 1,678 attached single-family homes, 1,327 units in duplexes, triplexes and fourplexes, 4,368 in buildings of five or more units, and 649 mobile homes. Almost 6 in 10 homes were built between 1950 and 1969, and about 41% of households rent.
Each type shapes where cockroaches come from. In an apartment building, LA County's guide notes that roaches frequently arrive from neighboring units. In a detached house, the source is more often a used appliance or a box carried inside, or an outdoor species finding its way in. In a duplex or fourplex with one owner and a handful of units, treating all of them on the same visit is usually the simplest fix.
Sources: [1][2]
Mobile homes: the space under the floor
Census estimates count 649 mobile homes in Covina, close to 4% of its housing, and they call for a different approach than a house or an apartment. Water and drain lines in a manufactured home typically pass through the floor into the enclosed space behind the skirting, and any slow leak there keeps the ground damp and shaded.
That is the habitat the county's guide describes for oriental cockroaches: dark, damp areas under homes where plumbing leaks or irrigation keep the soil wet. American cockroaches favor warm, humid spaces and drains. Meanwhile German cockroaches can be living in the kitchen above, so a mobile home may need two treatments at once.
We check the underside through the skirting access, look for leaks and gaps where pipes come through the floor, treat the outdoor species at their source and bait the kitchen and bathroom for German roaches. If a park has rules about work under homes, we follow them.
Sources: [1][2]
Restaurant closures on Citrus, Arrow and Vincent
Food businesses in Covina have appeared on county closure lists for vermin infestation. A restaurant on West Arrow Highway was closed April 29, 2025, according to FOX 11's weekly list. A pizzeria on North Citrus Avenue was closed after a May 22, 2025 inspection, pending reinspection. A restaurant on North Vincent Avenue was closed January 14, 2026 and reopened January 16, according to KTLA. None of the reports says whether the pest was an insect or a rodent.
For Covina restaurants, our service is scheduled before opening or after closing and centers on dish areas, floor drains, cooler motors and dry storage. We use gel bait, growth regulators and traps instead of broadcast spraying near food, and leave a written record of every visit.
Sources: [4][5][6]
Covina's rental inspections and older rentals
Covina launched a Rental Inspection Program in June 2013 aimed at non-owner-occupied rental properties, according to a 2015 Western City article. It followed a tripling of code enforcement inspections, from about 4,000 a year in 2008 to 12,000 in 2011, and a staff finding that 64% of repeat violations happened at non-owner-occupied properties. The article does not mention pests specifically, and its rules may have changed since, so check with the city for current requirements.
Separately, LA County Environmental Health investigates complaints at rental housing in Covina. For owners, our written inspection report lists the species, where it is breeding and the leaks, gaps and door sweeps that need repair, which is the same evidence a tenant or an inspector would be looking at.
Sources: [7][3]
