There are several ways to kill gnats instantly, including:

• Homemade gnat repellent spray: A mixture of dish soap, water, baking soda, and vinegar can be filled into a spray bottle. The mixture should contain a few drops of dish soap, a tablespoon of vinegar, and baking soda per cup of water. A few sprays of this mixture is an effective gnat repellent. They may be sprayed in areas where gnats are commonly seen, such as around plants, in the bathrooms, etc. .

• Homemade gnat killer spray: A mixture of half a cup of water, half a cup of isopropyl alcohol, and a teaspoon of dish liquid can be filled in a spray bottle. This mixture can be sprayed on the gnats directly to kill them.

• Apple cider vinegar gnat trap: A few tablespoons of apple cider vinegar, a few drops of dish soap, and a tablespoon of sugar can be mixed in a bowl and placed in an area where gnats are commonly seen such as the kitchen, bathroom, or indoor garden. Sugar and apple cider vinegar attract gnats, the dish soap traps the gnats and causes them to drown.

• Gnat fruit trap: Rotting fruits may be placed in a jar covered with a perforated plastic wrap. Gnats get attracted to rotten fruits, enter the jar, and get stuck inside, unable to escape.

• Diluted bleach down the drains: If gnats are commonly seen around the kitchen sink or bathtub, a cup of diluted bleach can be poured down the drain to kill the gnats.

• Spray-bottle filled with water, vinegar, and dish soap: A spray bottle filled with water, vinegar, and a little bit of dish soap can be used to target the gnats directly.

• Wine trap: A trap can be made by mixing red wine and dish soap, or by mashing up rotting fruit and placing it in a container with plastic wrap over the top. Then puncture the wrap so gnats can fly in and get trapped.

• Sticky traps: Sticky traps designed for gnats can be placed where gnats have been seen. The gnats are attracted to the traps and stick to them, where they will die.

• Vinegar trap: A bowl filled with vinegar and a teaspoon of plain sugar can be placed near the infestation. The gnats will be drawn to the sugar and drown in the vinegar.

These methods can be used to kill gnats instantly and effectively.