Ticks and Fleas in Summer
Understanding why ticks and fleas thrive in summer
Fleas and ticks thrive in warm, humid conditions, making them especially active during the summer months.
In warm, humid conditions, fleas can complete their life cycle in just a few weeks, allowing infestations to build up very quickly. Ticks are also more active at this time of year, particularly in grassy or wooded areas where they wait to attach to passing pets.
Regional risk: where are fleas and ticks most common?
In the UK, ticks are more commonly found in:
Woodlands, moorlands, and long grass
Rural and coastal areas with high wildlife activity
Countryside and upland regions across Scotland, Wales, and parts of England, particularly during warmer months
Globally, changing climate patterns are contributing to increased flea and tick activity in a wider range of regions. This means year-round prevention is becoming increasingly important.
Ticks and Fleas in Summer: Signs to watch out for
You may not always see fleas or ticks straight away, but your pet may show signs such as:
Excessive itching, biting, or licking
Hair loss or scabs
Red or inflamed skin
Tiny black specks in the coat (flea dirt)
Visible ticks, often around the ears, neck, or legs
Prevention of Ticks and Fleas: what works best in warmer months
A consistent preventative routine is the most effective way to protect your pet.
For your pet:
Use regular flea and tick treatments (spot-ons or tablets)
Groom your pet regularly to help spot early signs
Check their coat with a flea comb
Wash bedding and blankets frequently
For your home and garden:
Vacuum carpets and furniture regularly
Use household flea treatments if needed
Keep grass short and outdoor areas tidy
Going on holiday with your pet
Flea and tick risks can vary depending on where you’re visiting. Higher-risk environments include:
Countryside areas
Woodland and parkland areas
Areas with long grass or dense vegetation
Risk can vary even within the UK, so it’s important to stay consistent with prevention wherever you go.
Before travelling, ensure your pet’s flea and tick prevention is up to date. Take treatments with you and check your pet after walks, especially in higher-risk areas.
Treatment once ticks or fleas are detected
If you discover fleas or ticks on your pet, effective treatment options are available:
Topical treatments (spot-ons)
Oral medications (tablets or chewables)
Medicated shampoos or soothing skin products
Environmental treatments, including sprays and thorough vacuuming
Treating both your pet and their environment is essential to prevent reinfestation. Always follow your vet’s advice to ensure the most appropriate treatment is used.
Need advice or treatment? If you’re unsure which flea or tick prevention is right for your pet, or you’ve noticed any signs of infestation, speak to your vet, who can advise on the most appropriate treatment.
Links to related information:
Our advice for ticks
Our advice for fleas on dogs
Our advice for fleas of cats
Our advice on Lyme's disease in dogs ands cats
Written by Gillian Burkhill, Veterinary Surgeon, Animal Trust Vets CIC | Published May 2026 | Review date May 2029 | This advice is for UK pets only and is not a replacement for seeing a vet