Can you use Ajax and dish soap to kill nats?

Yes, you can use a mixture of Ajax dish soap and water to kill gnats. The soap acts as a surfactant, breaking down the insects' exoskeletons and suffocating them. To use, mix a few drops of dish soap with water in a spray bottle and apply it directly to the gnats or their breeding areas. However, be cautious with any soap solution on plants, as it can harm them if used excessively.