Why do fleas keep coming back after one treatment?
Adult fleas on a pet are a small share of the population. Most are eggs, larvae and pupae in carpet and bedding, and pupae can wait for weeks before hatching. A single treatment kills the stages it reaches, but new adults keep emerging, so a repeat visit, vacuuming and pet treatment are usually needed.
A flea pupa is protected inside a cocoon and can wait for a vibration, warmth or a breath of carbon dioxide before emerging. That is why bites sometimes seem to get worse a week or two after treatment: new adults are hatching into a treated space.
Vacuum daily during the first weeks and empty the bag outdoors. Wash bedding hot. These steps help the treatment reach where larvae live.
Where do ticks live around a Baltimore home?
Ticks wait in leaf litter, tall grass and shrubby edges, usually in shade and humidity rather than open sun. They are more common near wooded parks, stream valleys and larger lots. A yard with a manicured lawn can still have ticks along its border with trees, a fence line or a compost area.
Ticks climb onto a passing animal or person and look for a place to attach. Pets that walk through brush, children playing at the edge of a yard and adults doing garden work are the usual targets.
After time outdoors, check your skin, scalp, behind the ears and groin, and check pets, too. Ticks in the region can carry illnesses, including Lyme disease, so removal and a call to a doctor or vet is the right response to an attached tick.
How should I prepare for flea treatment?
Vacuum carpets, rugs and furniture, wash pet bedding and linens on a hot cycle, pick up items from floors and keep pets and children out of treated rooms until the product has dried. Have the pets treated by a veterinarian at the same time, because treating the home alone will not clear fleas on the animal.
Details matter. Move beds and furniture where you can so the technician can reach baseboards and the edges of carpets. Empty the vacuum bag outdoors straight away, because eggs can survive inside.
Ask the technician how long to stay out of treated rooms, what to do about food bowls and fish tanks, and whether anyone with respiratory conditions should take extra precautions.
Do I need to treat my pet as well?
Yes. Fleas live on the pet and in the home, so treating one without the other usually fails. A veterinarian can recommend a safe flea and tick preventive for your animal's species, weight and health. Do not use a dog product on a cat, because some are toxic to cats.
Ask your vet about a regular preventive, not just a one-time treatment, particularly if your pet goes outside or walks in parks and wooded areas.
A technician treats the home and yard, and the vet treats the pet. When the two happen close together, results are better and a repeat visit is often shorter.