Many times, the date on the bottle of a food or product purchased from a grocery store is a sell-by date, not always an expiration date. Either way, it is not advised to eat or drink bottled lemon juice that say it's expired. However, after slight expiration, the acid in lemon juice that makes it a great cleaner, polisher and degreaser isn't affected, so your lemon juice can still be used around the house.
Cleaner
Use your lemon juice as an all-purpose cleaner. Put an equal amount of water and lemon juice in a spray bottle to form a cheap and effective cleaner for the kitchen and bathroom.
Use your lemon juice to clean the microwave. Heat up a bowl of lemon juice and water for 30 to 60 seconds. Allow the mixture to cool, then use it to wipe out the interior of the microwave with a sponge.
Use your lemon juice to clean the toilet. Mix 1 cup of lemon juice and ½ cup of Borax together in a bowl. Use a toilet brush or sponge to clean the toilet bowl.
Polisher
Squirt some lemon juice onto a sponge, then use it to wipe away lime scale from a sink or tap faucet. Rinse well with water when you’re done.
Mix ½ gallon of water and 4 tbsp. of lemon juice in a gallon jug to make a window cleaner. Put into a spray bottle for easier use.
Mix equal amounts of lemon juice and baking soda paste, then rub into copper, chrome or brass. Buff with a paper towel or soft cloth.
Mix ½ cup of lemon juice with 1 cup of olive oil to create a furniture polish.
Degreaser
Add 1 tsp. of lemon juice to your dish detergent to help cut grease.
Pour straight lemon juice onto a greasy pan to degrease it.
Soak your hands in lemon juice to cut hard-to-clean grease or oil after working on a car.