DIY - zrób to sam

You will need:

8 fl oz (235 ml) 3% hydrogen peroxide
3 tablespoons baking soda
A drop of liquid soap

How to use it:

Make the mixture right before you are going to clean a mattress as it’s more effective this way.

Mix baking soda and peroxide in a spray bottle. When baking soda dissolves, drip liquid soap in there. Shake the bottle and spray а dirty spot.

Leave it for 5-10 minutes. If you want it to dry faster, turn on a fan and point it to the spot.

Clean off the remnants of baking soda with a vacuum cleaner.