Things You'll Need
Instructions
Mix a concoction of one part vinegar and two parts hot water. Place the bottle in the water and vinegar. The concoction will eat away at the salt buildup from the outside of the bottle.
Pull the bottle out of the water and dry it off with an absorbent cloth. Grasp the cap of the bottle with the cloth. Twist it slowly until you remove the cap.
Brush out the threading on the inside of the cap and the neck of the bottle with a soft bristle toothbrush. Rinse it once you loosen all the sand buildup.
Fill the inside of the bottle with pure vinegar. Allow it to sit in the bottle for three hours to remove salt and sand buildup trapped inside the bottle.
Insert a bottlebrush into the bottle and swirl it around. Focus on the corners in the bottle where sand will be at its thickest.
Empty the vinegar from the bottle. Replace it with hot, soapy water and put the cap on it. Shake the contents of the bottle until it fizzes up.
Dump the contents of the bottle again. Rinse it out until there are no suds left.