You use plastic bags every day to carry groceries home or to hold items you have purchased at the store. Plastic bags are not biodegradable, which means it will take hundreds of years for them to decompose. Recycling old plastic bags will ensure they are used again in other products and do not pollute the environment. You can recycle plastic bags by giving them to a local recycling center. You can reuse them at home or make crafts with them so they do not end up in a landfill.