Rats live wherever food and shelter are, and busy waterfront areas have plenty of both. Roof rats can travel up to 150 yards for food, so homes a few blocks away can see visitors. The fix is the same either way: close every opening in your house so they cannot get in.
Roof Rat Clues in a Mainland Riviera Beach House
West of the lagoon, from the Broadway corridor and Avenue E out along Blue Heron Boulevard past I-95, the calls we get from houses are mostly about roof rats. These are the clues people notice first.
Running at night
Quick scratching in the ceiling after dark. Roof rats are active from dusk to dawn.
Hollow fruit
Citrus, mango or papaya with a round hole and the inside eaten out is a roof rat sign.
Nests in old fronds
Dead fronds left on palms make a roof rat nest. A tree touching the roof is a bridge.
Banana-shaped droppings
Black droppings about 1/4 to 1/2 inch long near the soffit, insulation or AC unit.
Dark rub marks
Greasy smears on beams, pipes and wall tops where rats travel the same route.
Chewed lines
Gnawed wires, irrigation tubing and plastic water lines in the garage or attic.
Source: UF/IFAS Extension, Roof Rats UW120 (signs, palm frond nests, foods, droppings size).













