她从不使用氨水或者甲醛之类的有毒洗涤剂，并仔细询问客户和他们的宠物的过敏症病史，以避免使用加剧他们症状的材料。
It USES no toxic cleaning agents like ammonia or formaldehyde, and checks the allergies of clients and their pets to avoid using materials that might aggravate those conditions.
没有了蝙蝠，农民需要更多的杀虫剂来消灭害虫，而这同时也加剧了环境问题和食品价格的上涨。
Without bats, farmers may have to use more insecticide, raising environmental worries and pushing up grocery prices.
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