Ключевые слова: absorb, absorbent, alternative, animals, backdrop, background, biological, biomass, cat, cat litter, clean, dry, eco, ecologic, ecological, ecology, energy, feline, filler, firewood, fuel, heap, hygiene, kitty, material, natural, nature, object, organic, pellet, pelleted, pellets, pets, pine, power, purity, recycling, sawdust, smell, solid, source, timber, toilet, tray, urinate, urine, warm, wood, wooden,