Fleas reproduce explosively, and the eggs, larvae and pupae hidden in carpets, bedding and floor cracks vastly outnumber the adults you see. That's why flea problems rebound after spot treatment — the next generation hatches days later.
We treat all life stages across the areas pets frequent and advise on coordinating with your vet's pet treatment, so the cycle is broken for good rather than briefly interrupted.
Why fleas keep coming back in a NYC home, and what actually clears them
The cat flea is the most common flea that infests homes and bites both people and pets, and you can have an infestation even without owning a pet. University of Minnesota Extension notes that wild animals such as raccoons, opossums or squirrels nesting in an attic, fireplace or crawlspace can carry cat fleas indoors, so a pet-free NYC apartment is not automatically flea-free. (University of Minnesota Extension — Fleas)
The fleas you see on a pet are the visible minority of the problem. UC IPM explains that flea eggs are smooth and readily fall from the pet onto surfaces such as bedding and carpeting, where larvae and pupae then develop off the host in protected, humid spots. Treating only the adult fleas on the animal leaves the developing population in the home untouched. (UC IPM — Fleas)
Because most of the population lives in the environment rather than on the animal, the pet and the home must be treated together. University of Minnesota Extension is explicit that it is important to control fleas on your pets at the same time as in your home, and to treat pets at the same time the home is treated. Treating one without the other is why infestations rebound. (University of Minnesota Extension — Fleas)
On disease the honest picture is reassuring but not zero. The CDC notes fleas can transmit the germs causing plague, flea-borne (murine) typhus and cat-scratch disease, and can pass tapeworms if an infected flea is swallowed. In practice US human cases are uncommon and geographically limited, so for NYC residents the dominant problem is bites and irritation rather than serious illness. (CDC — About Fleas)
Signs you have a flea control problem
- Pets scratching, biting, or losing hair
- Small fast-moving insects in carpet or bedding
- Itchy bites around the ankles and lower legs
Why Williamsburg sees this
Fleas hitchhike between apartments on pets and in shared hallways — we treat thoroughly so they don't rebound.