In order to properly disinfect stuffed animals you will have to have an idea what you want to achieve. In most cases a simple wash cycle in the washing machine would be enough to clean the stuffed animals and make them germ-free.
But when you want to completely disinfect stuffed animals you would have to go a little extra in the effort department. For washable toys, check out the label for details on what temperature to set the washing machine cycle on. Also keep note on the detergent. Do not use bleach as it can ruin the color of the toy.
If the manufacturer allows, after washing, you can put the toy in the dryer on high heet for 45 mintues. This will kill almost all germs. If you are worried that the stuffed animal can shrink, then wait for it to dry completely on room temperature and then put it in the dryer.
Sadly not all toys can be put in the washing machine. Some have electronics in them that will be ruined if wet. A mild detergent mixed with warm water and a damp cloth can do the trick. Avod making the toy too wet though.
Another option is to put the toy into a plastic bag and into the freezer for a couple of days. This though can damage electronics so it is not a good idea to do for such a toy.
Baking soda is a great way to remove surface dust but it won’t disinfect stuffed animals completely. Use it as a first stage cleaning and then give it a treat with a mild detergent and some water on a damp cloth.