Electrical transmission towers support wires that carry electricity from power plants to homes. Electric current is electric charge in motion. It can take the form of a sudden discharge of static electricity, such as a lightning bolt or a spark between your finger and a ground light switch plate.
To clean stubborn stains from your toilet bowl, first if you have a wet/dry vacuum, suck out all the water so you have a virtually liquid free bowl. Then, pour in hydrogen peroxide. It will get rid of all stains and lime. I would suggest using 1/2 a bottle for each cleaning. You might need more or less.
Place the lid back on the tank. Allow the soapy water to stay in the tank for a few hours or overnight. This lets the detergent slowly penetrate the walls of the tank to help with stain removal. Flush the soap out of the tank using the normal toilet operation. Remove the lid to examine the success of your stain removal efforts. You may have to repeat this cleaning process a couple more times.