High risk
Scratching and thumping overhead at night, droppings in the loft, and gnawed insulation or cables.
Caution
Droppings behind the toaster, gnawed food packets, and a scratching noise behind the kickboards at night.
A steady stream of wasps going in and out of one point in the eaves, soffit, air brick or loft.
Bites appearing overnight, small dark spots along the mattress seams, and blood specks on the sheets.
Heavy daytime scratching and rolling noises above the ceiling, and shredded insulation in the loft.
Small brown insects running from the light behind the kitchen units, and a musty smell in the cupboards.
Itchy bites round the ankles, black specks in the pet's bedding, and fleas jumping when you walk across the room.
Pigeons roosting on the ridge or under the solar panels, droppings down the wall, and blocked gutters.
Low risk
Bald patches in a wool carpet under furniture, small holes in knitwear, and little moths in the wardrobe.
A trail of small black ants across the worktop or in from under the back door, every day in summer.
Describe the job and get a fixed price from a local pest controller.