Fleas ride in on pets and settle into the fabric of a home: deep in carpets, between floorboards, under rugs, and inside furniture, with a share of the population always waiting in the yard. Brisbane's warm, humid weather keeps them active for much of the year, so a light problem can build into an itchy, house-wide one faster than most people expect.
The thing that makes fleas stubborn is their life cycle. What you notice are the adults, but the eggs, larvae, and protected pupae make up most of the population and a single spray never reaches all of them. That is why our flea work is built around timing: the first treatment knocks down the active fleas and larvae, and a follow-up window catches the new ones as they emerge, before they breed and start again.
We treat the carpets, floors, skirting, furniture, and the yard harbourage together, because leaving any of those untreated leaves a reservoir to reinfest from. Flea jobs are common at the end of a lease where pets were kept, and we treat those to the standard the agent expects. The one part we cannot do is the pet itself, which needs treating through your vet to stop the cycle at its source.