Autumn in Australia and New Zealand brings a shift in pest behaviour. As temperatures drop, many pests seek warmth and shelter, often finding refuge in leaf piles around homes. Common autumn pests include rodents, which seek warm nesting sites, and spiders, which move indoors to escape the cold. Cockroaches and ants also become more prevalent as they forage for food and shelter before winter sets in. Additionally, the damp conditions created by leaf piles can attract slugs and snails, which can damage gardens.

Neglected leaf piles provide ideal breeding grounds for pests. The damp, dark environment offers shelter and sustenance, attracting rodents, insects, and other unwanted visitors. Rodents, in particular, can build nests within leaf piles, posing risks of property damage and disease transmission. Spiders find ample hiding spots, and cockroaches thrive in the moist conditions. Furthermore, decaying leaves can create mould and attract pests that feed on decaying organic matter.