What is a key indicator of a flea infestation in a home?

The presence of flea dirt is a key indicator of a flea infestation in a home because flea dirt consists of the digested blood fleas leave behind, which resembles small black specks or grains. When you find these specks, especially in places where pets frequent, it signals the presence of fleas. The identification of flea dirt can help determine if fleas are not just present, but active, as it requires a feeding flea to produce this waste.

Visible webbing is typically associated with other pests like spiders, while excessive barking from dogs might indicate discomfort or irritation, which could have various causes, not solely fleas. Noise from scratching can indicate an issue, but it’s not as definitive as finding flea dirt, which directly indicates an infestation. Therefore, recognizing flea dirt provides a clear and direct sign that treatment may be necessary to address the flea problem effectively.