The working principle of a toilet spray gun is simple. It primarily utilizes the pressure of tap water to create a high-pressure water spray. Typically, a toilet spray gun is connected to your home's plumbing system. When the spray gun's valve is opened, tap water, under pressure within the pipes, rapidly flows through the gun's nozzle. The nozzle is specially designed to concentrate and accelerate the water flow, creating a high-pressure jet of water that sprays out. This high-pressure water jet has a powerful impact, effectively flushing away dirt and stains from the toilet bowl's surface. Furthermore, by adjusting the switch or knob on the spray gun, the water flow and spray pattern can be controlled to suit different cleaning needs.