Complex sentence: The containers may be coated with harmful chemicals such as chromate, phosphorous, and lead-based paints and its wooden floors may be treated with toxic insecticides, and some cost and effort are involved in modifying containers to make them habitable.
Split into simpler sentences: The containers may be coated with harmful chemicals such as chromate, phosphorous, and lead-based paints and its wooden floors may be treated with toxic insecticides. Considerable cost and effort may be involved in modifying containers to make them habitable.