If it is plastic, you can add some bleaching powder to the water to melt it, soak the building blocks in it for scrubbing, and rinse them with clean water after removing dirt. Put it in a ventilated place to dry, and do not expose it to the sun to avoid deformation.

If it is made of wood, add soap powder to boiling water, put the building blocks into it for cleaning after melting, and rinse them with clear water after ironing. Then dry it thoroughly, and it must be dried thoroughly. If you don't do it, wooden blocks are easy to get moldy and deformed.

It can also be disinfected, including all toys.

Wood: scrub with 5% bleaching powder solution, then rinse with clear water to dry or dry; heat-resistant wood toys can also be boiled in boiling water for about 10 minutes.

Plastic and rubber toys can be soaked in 0.2 bleaching powder solution for 20-30 minutes.

As for the storage of toys, it is best not to use plastic bags or the like. You can find a paper box, such as a milk box, and just put it in and seal the lid. Or storage boxes, which are sold in supermarkets now, are very convenient to buy. Or just use the packaging when you buy it, if you don't throw it away.