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.
To clean a toilet with bleach, measure a half cup of dry bleach powder and allow it to sit in the bowl for up to two hours. Flush once you see that stains are removed. As a last resort, use a pumice stone and a toothbrush to get rid of extreme toilet stains. Keeping one end of the pumice damp, rub the stone across toilet rings, but be sure to do so cautiously. Pumice can easily scratch a toilet bowl, leaving it damaged beyond repair.