Measure the amount of water
Before treating the water with some larvae killing medicine, make sure that you have calculated the amount of water present in the tub, pool or any other place. By doing this, you will be able to determine the amount of mosquito dunks to be used. They are easily available in the market and are not much costly.
Read the instructions
When you buy the dunks, you will get some information about how to use them. It is always important to read those instructions before using the dunks. Even if you are aware of the process, make sure you go through the manual quickly. This way, you will be able to determine how much mosquito dunks are required in relation to the water.
Throw dunks in water
Once you are aware of what to do, throw the mosquito dunks in water and check after every 30 days in order to confirm whether more dosage is needed or not. Since the larvae is not visible, you will have to continue repeating this process after every month.