Grey Squirrels

Risk/Damage

Squirrels can cause considerable damage, especially within a property.  They can enter roof spaces/loft areas by climbing walls or jumping from nearby trees or fences.  Once inside they can chew woodwork and plasterboard, strip insulation from electrical wiring (possibly rendering it unsafe), and tear up fiberglass/loft insulation.  Additionally they will also nest in loft spaces.

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Biology & Behvaiour

The grey squirrel is active during the daytime.  They build nests (called dreys) from twigs and leaves in trees, sometimes in hollow tress but also can nest in building roof spaces.

Squirrels will breed twice a year.  The first litters are born February/March time and will be weaned in about 10 weeks.  The second litters are born June/July and will leave the nest about August/September.

They eat a variety of food ranging from nuts, fruit, birds eggs and nestling birds.  In urban areas much of their diet comes from food put out for birds, from bird table and feeders, or food specifically put out for squirrels.  Surplus food will often be stored for use at a later date.

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Control

Where squirrels enter loft spaces they can cause quite extensive damage and it is essential to block off any access holes to physically stop the squirrel getting in. For example, entrance holes and gaps can be blocked with tightly wedged wire netting (proofing needs to be something strong and resilient to deter squirrels as they have very durable teeth; additionally they show considerable determination and ingenuity in order to enter a building).  Any missing roof tiles or slates should be replaced and any overhanging tree branches close to the property that could allow squirrels to access the building should be removed.

Killing squirrels will usually only provide short term relief, as others can move into the area to replace those destroyed.  The best policy is to try and discourage squirrels by ensuring that there are no access points in the property, and should you wish to continue feeding the birds, ensure that feeders and tables are away from the property and consider using squirrel proof feeders.  Excess food should be cleared regularly (this will also help prevent the attraction for rats and mice).

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