It’s easy to use liquid dishwasher detergent. All you need to do is to measure out the required amount (according to the instructions on the detergent) and pour it into the detergent chamber on your dishwasher. Close the flap until you hear a click. The detergent chamber is usually on the inside of the door, although it may vary depending on the make and model of your dishwasher.
Be careful not to pour detergent into the rinse aid chamber, and never use washing up liquid or hand soap in your dishwasher as this can cause an excess of foam and suds.