Can the washing machine be used as a last resort?
If you have no other option, take precautions: check that the rug is machine washable, choose a gentle cycle with cold water to preserve the rubber backing, wash it separately, and air dry it. A tumble dryer could warp or melt the rug's backing.
Conclusion: Opt for gentle cleaning methods.
Putting your bathroom rugs in the washing machine might seem convenient, but this habit quickly damages them and can even harm your washing machine. To preserve their effectiveness and durability, it's best to opt for hand washing or spot cleaning. By taking care of your rugs with the right methods, you'll ensure a clean, healthy, and inviting bathroom.