Please choose the correct ending to complete the given sentence: Health: [header] How to handle a household chemical emergency [title] Buy only as much of a chemical as you think you will use. [step] Leftover material can be shared with neighbors or donated to a business, charity, or government agency. For example, excess pesticide could be offered to a greenhouse or garden center, and theater groups often need surplus paint.

Ending1: Some communities have organized waste exchanges where household hazardous chemicals and waste can be swapped or given away. [title] Keep products containing hazardous materials in their original containers and never remove the labels unless the container is corroding. Ending2: [substeps] Leave most of it in plain sight at home and in a sealed container in the basement, garage, or shed. If things get moldy, throw out the sample and wash it. Ending3: For larger communities, however, rent a more powerful form of chemical-based coverage. [title] Don't be afraid to consider commercial products. Ending4: [substeps] Remember that even the centers across the globe can be asthed. Doing so only over a period of weeks or months is unsanitary and cannot save you from legal charges.

Answer format: ending1/ending2/ending3/ending4