fairy dishwashing liquid kills fleas by Janine Collins fairy dishwashing liquid kills fleas100 ml fairy original 100 ml vinegar (I used malt but any will do) 100 ml warm water wet your dog then massage the mixture into the whole body avoid the eyes and ears (I don't apply to the head at all) you will see the fleas fall off dead rise off well reuse every other day for at least 3 weeks to ensure flea life cycle has been stoped. genuinely works