Flea dirt but no fleas on Pekingese — what to do

Flea dirt without visible fleas is actually a really common finding — it means the infestation is early, which is the best time to catch it. The tricky part is that treating fleas effectively means tackling both your dog AND your home: around 95% of the flea population lives in carpets, bedding and furniture rather than on the dog itself, so one product rarely does the whole job. To point you in the right direction — what breed and rough weight is your dog, how bad does the infestation seem right now, and have you done anything to treat the home yet?

Good news — you've caught this early, which makes it much easier to sort. At 5kg, your Pekingese fits comfortably into the small dog range. Before I suggest anything, I want to check one thing: at 10 years old, is she on any regular medication, and does she have any known skin sensitivities? Pekingese can have facial skin folds that sometimes react, and some older dogs have kidney or liver conditions that affect which treatments are safest.

Perfect, that makes this straightforward. For a small, healthy older dog with a light infestation confirmed by flea dirt, I'd go with Advantage 40 for Small Dogs (Bayer). It's a spot-on treatment that kills fleas through contact — they don't have to bite to die, which is gentler for a senior dog. It starts working within a few hours, is safe and well-tolerated, and vets reach for it regularly for older or more sensitive dogs because it doesn't rely on the nervous system in the way some alternatives do. Apply it to the skin at the back of the neck, away from where she can lick. One pipette lasts a month.

For the home, use a household flea spray that contains an IGR — an insect growth regulator — alongside an adulticide. Indorex Defence Household Flea Spray is the one most commonly recommended by vets and it covers both. Spray it on all carpets, soft furnishings, skirting boards and under cushions, leave it to dry, and don't vacuum for at least two days. One can treats up to 80 square metres. Also wash her bedding at 60°C. With only flea dirt and no live fleas visible, a single thorough treatment of the home plus the spot-on should get on top of it within two to three weeks. Repeat the spot-on monthly.

For a case this light, monitoring at home is fine. Run a fine-toothed flea comb through her coat once a week over white paper — you're looking for flea dirt (tiny black specks that turn reddish-brown when wet) or live fleas. If you're still seeing flea dirt after four to six weeks of consistent treatment, or if she starts scratching a lot or her skin looks irritated, that's worth a vet call. But caught this early with good home treatment, most dogs clear up well within the first month.