Metal Toys are by far, the easiest to care for! They can be boiled (for about 10 minutes, carefully so that the metal doesn't touch the bottom of the pan), washed with hot soap and water, thrown in the dishwasher, or washed with antibacterial toy cleaner.
If they have spots after washing, just buff them out with a microfiber cloth. No need for glass cleaner.
Store your metal toys in a soft cloth or old pillowcase to avoid scratching them in your drawer or toy bag.
To sterilize (or deep clean) your toys, simply boil them for 10 minutes and allow them to cool and dry completely before handling or storing them.
And remember, metal toys are great for temperature play, but there is such a thing as too hot! Please play safely.