There may be nothing more soothing than a good yoga class, especially when your muscles are tense and sore, or if you are under a lot of stress. But if you’ve ever put your head in a yoga block center position and suddenly haven’t been able to think of anything but the bacteria crawling all over the place, you’re not alone. To help you get better in the zone, POPSUGAR asked a trainer how often you should clean your yoga blocks and what products you should use to prevent damage to them.

How often should I clean my yoga blocks?

Just as your yoga mat can become foul-smelling and germ-driven if not cleaned regularly, yoga blocks can also get a little rough, so make sure you clean them from time to time. How often is it necessary? It depends on.

According to Sarah Pelc Graca, a NASM-certified personal trainer and weight loss trainer, you need to consider how often you use blocks and how sweaty you typically get during your workout. “If you use them several times a week, I would recommend washing them once a week or two, but if you use them less often – say once a week – you can wash them once a month,” Pelc Graca told POPSUGAR. Likewise, if you are taking hot yoga, you will probably need to clean the blocks more often than you would when taking milder yoga classes.

How to clean yoga blocks

The best cleaning methods vary slightly, depending on whether your blocks are made of foam, wood or cork. The good news? You probably already have everything you need to get the job done, and as long as you clean the blocks fairly regularly, you probably do not have to worry about them getting too badly stained or smelly.

“For a yoga yoga block of foam, I recommend mixing a few drops of dish soap in water and using a towel dipped in soapy water to clean your block,” said Pelc Graca. Similarly, a simple damp cloth should be enough to clean wooden blocks. “Because wood soaks into water, be careful not to use excess water,” she added. Cork blocks, on the other hand, require a little more care. “Since cork is environmentally friendly and natural, it requires a different cleaning process than other yoga blocks,” Pelc Graca explained. “You can use a mild, organic, natural cleanser if you need to, but water and a cloth usually do the trick. I do not recommend soap on corkyoga blocks.”

Pelc Graca added that you can also use tea tree oil as a substitute for soap when cleaning yoga blocks. “It is a natural and organic disinfectant, so it kills bacteria and germs without the harsh effects of some soaps,” she explained. But you clean them, and whatever the material is, be sure to let the blocks air dry.