Porcellio laevis is native across Western Europe, the Mediterranean basin, and North Africa, thriving in warm, human‑influenced habitats such as farmland edges, compost heaps, old stone walls, and leaf‑rich woodland margins. Wild colonies are bold, fast‑moving, and highly opportunistic detritivores, grazing continuously on decaying leaves, softened wood, and microbial films. Their success comes from rapid reproduction, strong foraging behaviour, and an ability to exploit nutrient‑rich microhabitats with stable moisture and good airflow.
 
The ‘Snow White’ morph is a captive‑bred leucistic line, not found in natural populations. Despite its striking pure‑white appearance, its behaviour mirrors the wild type: active, visible, and quick to establish dense colonies when provided with deep substrate, abundant leaf litter, and a reliable moist‑to‑dry gradient. Like all P. laevis, they favour warm, moderately humid environments and will cluster in damp pockets while venturing into drier zones to forage.