Complex sentence: It is fully biodegradable and is not an environmental pollutant; poses no risk of contamination to crops and the food chain, and little threat of toxicity to children, pets, livestock or birds, including through secondary poisoning.
Split into simpler sentences: It is fully biodegradable, with no environmental pollution, and no risk of contamination to crops and the food chain. It poses little threat of toxicity to children, pets, livestock or birds, and of secondary poisoning.