Wash that yoga mat! And other tips

Calling all yogis -- Fitsugar has some great suggestions on on yoga mat etiquette. When was the last time you washed your mat? I'm embarrassed to think about how many times I've practiced on mine compared to how many times I've cleaned it. And I never wash my feet before staring my poses. Here are some mat tips, whether you're borrowing or using your own:

• Let your mat air-dry every now and then -- otherwise it's can breed bacteria
• Wash your feet before using your mat -- even if you've been wearing socks, chances are your feet still aren't very fresh.
• Don't step on anyone else's mat -- even if you're just passing through
• Don't use spray to disguise any funny smells on your mat -- wash it!

How do you take care of your yoga mat?