While you can use bottle soap on all your dishes if you’d like, it may not be strong enough to cut through grease and caked on foods that are on other dishes. This is why it may be better to get something stronger for your regular dishes. However, you can use some regular soaps on your baby bottles. You just need to make sure they’re natural and organic and don’t contain any harmful ingredients. Most natural brands will tell you if they work for milk film and are safe for bottles.