I cannot recommend this product enough!
As someone who used to design medical sterilises, I did a lot of comparison with other products. This product expels because of:
1-drying feature: the product claims goods are kept sanitised until the lid is open. Microbio will grow on moist surfaces. Therefore, it is key to have dry goods when opening the lid.
2-sterilisation method: this product is a steam. I really do not buy into products that claim sterilisation with UV. Please avoid these for your children. UV process is heavily limited by distance to the UV light source. I do not believe that UV light will penetrate in any meaningful way around crevices.
3-steam penetration: the product is designed in a way that allows the steam to easily flow between layers.