Lately, with my son having so many sports events to go to, I've been forgetting his reusable water bottle and having to stop and buy bottled water. I hate to add to plastic usage. I do recycle, but it still seems like a waste of money for both the water and the bottle to throw in the trash. So...I've been washing them in warm soapy water and reusing them. I know that it may be harmful to run them through a dishwasher with high heat, due to the plastic seeping toxins, but I figure, warm soap can't hurt! I love reusing stuff, even tiny steps to save money and our earth make me feel good!