Clean sink drains are the secret to a fresh smelling kitchen. Unfortunately, mildew often loves areas with moisture and low light for breeding and where food particles provide excellent nourishment. These are the exact characteristics of most kitchen drains. Even when all visible fungus has been removed, the smell just will not go away. Instances like this are frustrating, but not completely hopeless. By defusing antiseptic oils into the drain, any lingering mildew spores will be killed and the smell will shortly leave.
Step 1 - Clean the Sink Drain
Make sure the drain has been cleaned of mold and mildew completely and just the smell remains. In large quantities of mold or mildew still remain around the sink or in the drain, the problem will quickly return. Only when the sink has been completely decontaminated from the fungus can the smell be removed.
Step 2 - Using a Cotton Ball
Before working with any concentrated oils it is important to not only wear rubber gloves, but to also wear a face mask. The concentration of the oils can greatly hurt the skin and also the delicate tissues of the lungs. Saturate a cotton ball with either cinnamon or tea tree oil. Press the cotton ball into the crease around the sink drain where the metal meets the outer sink. Run the swab around the circumference. Turn the swab over, and repeat. Do once a day for five days to remove any mildew which might be stuck in the crease.
Step 3 - Defusing the Oils
Soak a paper towel in cinnamon or tea tree oil and then wad the towel up and place it in the drain. Put a heat safe bowl (Pyrex, metal, etc) tightly over the paper towel. Plastic bowls will not work since the goal is to heat up and vaporize the oils. Plastic heats up and then dissipates the heat. Without maintain a high heat level, the oil will not vaporize.
Step 4 - Heating With a Hair Dryer
Using a hair dryer on the high setting, heat up the bowl to dissipate the oil through the drain. Hold the dryer about two to three inches above the base of the bowl. Continue heating for five minutes. The smell of the oil will get stronger as it heats and is forced down the drain. It is important that the scent of the oil is one which is liked by those living in the house for this reason. Cinnamon and tea tree are strong antiseptic oils and when vaporized will reach areas of the drain which otherwise remain moist and dark for mildew spores.
Step 5 - Repeat
Repeat this process for five days. Each day the smell should get more and more minimal. After five days it is fairly safe bet that the mildew which can be killed has been and all spores are removed. If the smell still persists, call in professional cleaners since the issue might be more severe.