Flea control for Long Beach homes, yards and crawlspaces where fleas keep hatching

The flea pupa sits inside a sticky silk cocoon that collects dust and carpet fibers, which makes it hard to see and very hard for any treatment to penetrate. A fully formed adult can wait inside that cocoon for weeks, sometimes months, until it senses vibration, carbon dioxide and warmth. That is why people often notice more fleas in the days after we treat, not fewer.

Those newly hatched fleas are dropping onto surfaces that still carry the treatment, so they die before they can feed long enough to lay eggs. The growth regulator does the quieter work of stopping larvae from ever reaching the cocoon stage. Put together, the population collapses over two to four weeks instead of overnight. Knowing this timeline ahead of time keeps people from panicking and reapplying store sprays on top of our treatment, which rarely helps and can disturb the treated layer.

Vacuuming is the single most useful thing you can do, and it helps in two ways. It pulls eggs, larvae and flea dirt out of the carpet, and the vibration coaxes adults out of their cocoons sooner so they contact the treated surface. Vacuum daily for the first two weeks, including under couch cushions and along baseboards, and empty the canister or seal and toss the bag outside each time.

Wash pet bedding, throw blankets and washable cushion covers in hot water and dry them on high heat. Keep the pet on the product your veterinarian recommends without gaps, because a single missed month gives a surviving flea time to restart the cycle.

• Vacuum every day for about 14 days, then every few days after
• Hot wash and high-heat dry all pet bedding weekly for a month
• Do not shampoo or steam the carpet for about two weeks after treatment
• Keep pets off freshly treated floors until the surfaces are fully dry

Fleas are more than an itch in this part of Southern California. Public health agencies in Los Angeles County, including the Long Beach health department, have reported cases of flea-borne typhus in recent years, an illness spread when infected flea feces get into a scratch or bite. Opossums, rats and free-roaming cats are the animals most often tied to the fleas that carry it.

That is a strong reason not to tolerate animals living under the house. When we treat a crawlspace or the soil under a porch, we are also looking for the entry gaps, torn vent screens and loose skirting that let opossums and cats move in. Clearing the den, treating the soil and sealing the openings removes the flea source rather than just knocking down the fleas already indoors. If anyone in the household has a fever and rash after flea bites, a doctor should hear about the flea exposure.

The raised-foundation bungalows in Rose Park, Belmont Heights and Wrigley are some of the most common flea jobs we take on, because the crawlspace under the floor is a dry, sheltered den for opossums and stray cats. Floor vents and gaps around old plumbing let the larvae and newly hatched adults work their way into the rooms above, so the bites start in a back bedroom long before anyone spots an animal under the house.

Downtown and Alamitos Beach see a different pattern: apartment and courtyard units where a previous tenant had a cat or dog and the carpet held cocoons through the turnover. Fleas also build up fast in the warm months, roughly May through October, when mild coastal nights and irrigated, shaded side yards give larvae everything they need. In the slab ranch homes of Los Altos and El Dorado Park Estates the indoor population is usually smaller, and the yard, the dog run and the shady strip beside the garage are where we concentrate.