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Snails suddenly appear mainly due to favourable environmental conditions, especially increased moisture after rain or watering, along with the presence of fresh plants they feed on. Gardens with shady, damp areas providing food and shelter attract snails, and some aquatic snail species can rapidly multiply, leading to sudden population surges.
Snails are generally not harmful to people; they can be beneficial in gardens by helping to decompose organic matter and recycle nutrients, though they may cause damage by feeding on plants. Their impact depends on context — they support ecosystem health but can be pests to garden vegetation.
Snails typically inhabit moist, shaded spots in the garden such as under leaves, stones, logs, or compost heaps where they find food and protection. They are most active in damp environments and often feed at night, leaving slime trails behind.
Snails enter houses seeking moisture and food, often gaining access through gaps in doors or windows or by hitching a ride on plants and soil. They thrive in damp indoor areas like basements or bathrooms, especially where there is a nearby garden that serves as a source.
