Soap and Water
Regular old soap and water is a great way to begin cleaning your flip flops. Instead of using your hands to clean them, use an old toothbrush to get rid of the dirt that builds up in and around the flip flops. With a little scrubbing, all of the dirt and mess should be cleaned away, giving your flip flops a new life.
If you do not have any dishes to clean, washing your flip flops via dishwashers is a great idea. Remember not to have any dishes inside. By adding a little vinegar and baking soda, not only will your flip flops get cleaned, but so will the dishwasher itself. There is no harm in it, so why not give it a try?
Using an oxygen cleaner is another time tested method for cleaning flip flops. This will also require the use of a toothbrush to get the stains off your sandals. For best results, make sure you leave the cleaner on for a few moments before using the brush to loosen up the dirt and grime with ease.
When you are done taking a bath, soaking your flip flops in water for a few moments is recommended in order to take double benefit of the water which is already about to get wasted. This method is great when it comes to conserving water as well because there will already be a lot of soap. It is perfect to loosen up any grime on the flip flops, which can be later removed by a brush.