Pest Control in Pollença – Pine Forests, Processionary Caterpillars, and Old Town Pests

You are walking the dog along the road toward Cala Sant Vicenç in late February. The morning sun is warm. The pines are dense on both sides. Then you spot it – a line of caterpillars, nose to tail, crossing the path. Twenty, thirty, maybe fifty of them in a single procession. Your dog lunges toward the line, and you pull back hard. You know what happens if a dog mouths a processionary caterpillar. You have heard the stories from other Pollença dog owners. Swollen tongue, anaphylaxis, sometimes worse.

Pollença sits in Mallorca’s northeast, where the Serra de Tramuntana meets the coast. It is a town of stone houses, the famous 365 Calvari steps, and the Sunday market that fills Plaça Major. The Formentor peninsula extends north, covered in Aleppo pine forest. Port de Pollença curves along a sheltered bay. Between the historic town, the port, and the pine-forested hills, Pollença occupies a landscape that sustains a distinctive set of pests – led by the processionary caterpillar, a species that other Mallorcan towns encounter but that Pollença, surrounded by pines, deals with more than most.

Processionary Caterpillars: Pollença’s Defining Pest

The lifecycle dictates the management calendar. Nests become visible in pine canopies from November. The white silken bags are easy to spot against the green needles. Each nest contains a colony of one hundred to three hundred caterpillars. The more nests present, the greater the processionary season that follows.

Caterpillars descend from trees when soil temperatures reach the right threshold – typically February in Pollença, sometimes as early as late January in mild winters. They form lines along the ground, crossing paths, roads, gardens, and terraces in their search for suitable soil to burrow into.

What works: A multi-layered approach across the full lifecycle.

• Summer (June-August): Place pheromone traps in pine trees to intercept adult moths and reduce egg-laying. One trap per two to three trees is the recommended density.
• Autumn-Winter (November-January): Monitor canopies for nests. Remove them mechanically using a long pole saw, wearing full protective clothing including mask and goggles. Alternatively, hire an arborist experienced with processionary caterpillars. Nest removal in this window prevents the descent entirely.
• Late Winter-Spring (February-April): Install trunk-collar traps (band-style or funnel traps) on pines to intercept caterpillars as they descend. Keep dogs on lead near all pine areas. Avoid touching caterpillar lines or nests. If contact occurs, wash the affected area with warm water without rubbing – rubbing breaks the hairs further into skin.

Mosquitoes: Irrigation and Standing Water

Pollença’s agricultural hinterland and the irrigation channels that feed orchards and gardens create mosquito breeding opportunities throughout the warmer months. Native Culex mosquitoes breed in ditches, water troughs, and poorly maintained swimming pools in rental properties. The tiger mosquito (Aedes albopictus) has been recorded in the area, breeding in smaller containers – plant saucers, gutters, drainage trays.

Port de Pollença, with its dense concentration of hotels and apartment complexes, adds irrigated gardens and ornamental features to the breeding inventory.

What works: Eliminate standing water on a weekly cycle. Treat swimming pools and ornamental water features consistently. Fit mosquito screens on all openable windows and doors. For outdoor living areas, professional residual barrier treatments applied to perimeter vegetation every four to six weeks during summer provide meaningful mosquito reduction.

Cockroaches: Old Town Infrastructure

Pollença’s old town – centred on Plaça Major and the streets rising toward the Calvari – sits atop a drainage network typical of historic Mallorcan towns. American cockroaches (Periplaneta americana) inhabit these drains and enter ground-floor properties through floor drains, pipe gaps, and utility penetrations. The restaurants around the main square produce food waste that sustains local populations.

What works: Fine-mesh drain covers on all floor drains. Gel bait placed behind kitchen appliances, under sinks, and around pipe entry points. Building-wide drain treatment coordinated through the community of owners for multi-unit properties.

Wasps: Garden and Terrace Encounters

Paper wasps and European wasps (Vespula germanica) build nests in roof eaves, garden sheds, stone wall cavities, and underneath terrace furniture. Pollença’s garden-heavy residential layout – particularly in the villas and fincas on the outskirts – provides abundant nesting sites. Wasp activity peaks from July to September.

What works: Inspect eaves, sheds, and sheltered exterior spaces in April and May when queens are establishing new colonies. Small, early-stage nests (golf ball size) can be removed at dusk when wasps are inside. Larger nests should be treated by a professional using insecticidal dust or foam injection. Never seal a nest entrance without treating first – trapped wasps will find alternative exits into your home.

Pollença is one of Mallorca’s most characterful towns. The Calvari steps, the Formentor peninsula, the Sunday market – it is the Mallorca that people fall in love with. The pine forests that frame the town are part of that beauty. They are also the source of its most challenging pest. Manage the caterpillars proactively, handle the other pests systematically, and Pollença delivers everything it promises. Leave the pines unmonitored, and you will spend February to April in a state of high alert. The calendar is predictable. Use that to your advantage.