Face masks are sold out on Amazon and Walmart, but you can still get handmade alternatives from these websites

Henry Nicholls/Reuters

When shopping for masks online, be wary of seller claims that they protect against airborne virus particles.

• The CDC recommends everyone wear a face mask, but mass-manufactured masks are sold out everywhere.
• Homemade cloth masks have been touted as a solution, but not everyone has the time or resources to make one.
• Here are five places you can look for a cloth mask to buy when going outside during the pandemic.
• Visit Business Insider's homepage for more stories.

The CDC now recommends everyone wear a face mask to go out. However, medical-grade face masks are out of stock everywhere as supply is being redirected to hospitals.

In the absence of medical-grade face masks, people are being told to make cloth masks at home - a difficult task for those without sewing skills or equipment.

Cloth masks may not be especially effective at protecting the wearer, especially compared to medical-grade N-95 respirators. But they're often key to protecting others. Cloth masks made from materials with a thick weave can help catch droplets from coughs and sneezes, preventing those droplets from infecting others. They can also remind the wearer not to touch their face.

When shopping for masks online, be wary of claims by sellers that their masks protect against airborne coronavirus particles. They most likely don't.

But it's still a good idea to wear a cloth mask. And if you can't make one, here are five places you can buy them.