Spain's warm climate creates perfect conditions for pests that northern Europeans rarely encounter. Some, like processionary caterpillars, pose serious health risks. Others, like termites, can silently destroy your property. Knowing what to look for and when to call professionals protects your family and investment.
Processionary Caterpillars (Procesionaria)
DANGEROUS - Take Seriously
These caterpillars nest in pine trees and process in lines (hence the name) from January-April. Their tiny hairs cause severe allergic reactions in humans and can kill dogs.
- Symptoms in humans: Severe itching, rash, respiratory problems, eye irritation
- Symptoms in dogs: Tongue swelling, drooling, vomiting - can be fatal without immediate vet treatment
- Identification: White cotton-like nests in pine trees; caterpillars walk in nose-to-tail lines
NEVER touch nests or caterpillars. Keep children and pets away from pine trees December-April.
Professional Treatment
- Nest removal: €80-€150 per tree (must be done by professionals with protective equipment)
- Preventive injection: €50-€100 per tree annually (applied autumn before nesting)
- Pheromone traps: €30-€50 per trap (reduces population over time)
Termites (Termitas)
Spain has both subterranean and drywood termites. They cause millions in damage annually and are especially common in older properties and coastal areas.
Warning Signs
- Hollow-sounding wood when tapped
- Mud tubes on walls or foundations
- Discarded wings near windows
- Bubbling paint on wooden surfaces
- Small holes in wooden furniture or beams
Treatment Costs
- Inspection: €100-€200 (essential before buying property)
- Localized treatment: €300-€600
- Full house treatment: €1,500-€4,000 depending on size
- Barrier system installation: €2,000-€5,000 (preventive)
Common Household Pests
Cockroaches (Cucarachas)
Extremely common in Spain, especially coastal areas. German and American varieties. Professional treatment: €80-€150 per visit, often need 2-3 treatments. DIY products rarely solve established infestations.
Ants
Multiple species including tiny pharaoh ants (hard to eliminate) and larger carpenter ants (can damage wood). Professional treatment: €100-€250. Important to identify species for effective treatment.
Bed Bugs (Chinches)
Increasing problem, often brought in from travel or second-hand furniture. Professional heat treatment: €400-€800 for apartment. Chemical treatment: €200-€400 (less effective, multiple treatments needed).
Wasps and Hornets
Including Asian hornets (vespa velutina) - invasive and aggressive. Nest removal: €80-€200 depending on location and accessibility. Don't attempt DIY removal - stings can be dangerous.
When to Call Professionals
DIY May Work For:
- Occasional ants (commercial baits)
- Single wasp sightings
- Preventive measures
Always Call Professionals For:
- Processionary caterpillars (dangerous)
- Any termite signs (specialist treatment needed)
- Established cockroach infestations
- Bed bugs (heat treatment most effective)
- Wasp/hornet nests
- Recurring problems despite DIY attempts
FAQ
Are Spanish pest control products effective?
Professional-grade products: yes. Supermarket products: limited effectiveness. Spanish pests are often resistant to common chemicals due to widespread use. Professionals have access to stronger, rotating treatments.
How often should I have pest inspections?
Properties with gardens/pools: annually before summer. Apartments: when problems arise. Properties with pine trees: check for processionary nests every winter. Before buying property: always get termite inspection.
Will my home insurance cover termite damage?
Usually not - most Spanish policies exclude pest damage. Some premium policies offer coverage. Prevention is far cheaper than repair. Structural termite damage can cost €10,000-€50,000+ to repair.
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