Put in the dishwasher:
Some containers are dishwasher safe, so check the bottom of your container or the brand’s website to make sure.
Wash it with warm soapy water:
Pour out any leftover liquid, add a few drops of dishwashing soap and some warm water, secure the top, and shake for a minute or so. Thoroughly clean the cap as well and allow to air-dry overnight.
This is a great all-natural cleaner. After washing with soapy water, rinse well, and fill your container one-fifth of the way with white vinegar. Fill the rest of the container with water, let it stand overnight, and in the morning thoroughly rinse it out.
Use cleansing tablets:
Many companies make this type of product. Just fill your container with water, drop the tablet(s) in, allow to dissolve and then leave the container to sit for 15 to 30 minutes (depending on the product’s directions). Then rinse and enjoy your clean container.
These are suggestions only. You are responsible for ensuring your containers are clean, sterilized, and ready for use.