Fleas – Identification and Control
Overview
Fleas are small, fast-moving, blood-feeding insects that can become a major nuisance in both homes and businesses. Most flea infestations begin when pets such as cats or dogs bring them indoors. However, fleas do not only affect animals—they also bite humans, causing irritation, allergic reactions, and in some cases, the spread of parasites.
Fleas can be difficult to detect until an infestation is well established. Their powerful jumping ability allows them to move between hosts and into soft furnishings, carpets, and pet bedding. Once inside, their rapid life cycle enables them to multiply quickly, especially in warm environments.
While cleaning and treating pets are important first steps, fleas in the environment require a thorough and systematic approach. Professional pest control may be needed for large or recurring infestations to fully break the lifecycle and eliminate all stages from egg to adult.
How to Identify Fleas
Signs to Look For:
- Small, red, itchy bites, typically on ankles, lower legs, or waistline
- Pets scratching, biting, or grooming excessively
- Presence of flea dirt (tiny black specks) in pet fur or bedding
- Fleas seen jumping on carpets, upholstery, or clothing
Where Fleas Live
- On pets, particularly around the neck, tail base, and underbelly
- In pet bedding, blankets, and carriers
- In carpets, rugs, and cracks in floorboards
- In sofas, cushions, and other soft furnishings
Risks and Impact
- Bites cause intense itching and may trigger allergic reactions
- Fleas can transmit tapeworms (Dipylidium caninum) to pets and occasionally humans
- Rapid reproduction, one female can lay hundreds of eggs in her lifetime
- Pupae can remain dormant for weeks or months, making infestations hard to eliminate
Flea Behaviour
- Can jump vertically up to 18 cm and horizontally over 30 cm
- Feed on warm-blooded hosts, often at night or when movement is detected
- Eggs fall off hosts into the environment where they develop in carpets and furniture
- Lifecycle includes four stages: egg, larva, pupa, and adult, meaning infestations often persist unnoticed until fully mature
Control and Prevention
- Treat pets with veterinarian-recommended flea treatments on a regular schedule
- Vacuum thoroughly, especially around pet beds, carpets, rugs, and upholstery
- Wash pet bedding and blankets at 60°C or tumble dry on high heat
- Use insect growth regulators (IGRs) to prevent eggs and larvae from maturing
- Avoid using DIY sprays alone, as they may not target all lifecycle stages
- Minimise outdoor exposure in peak flea season, especially in untreated grassy areas