Start by cutting the tomato into thin slices. Place the tomato slices in a bowl and rub them with spiral insecticide. Once the tomato slices are evenly coated with insecticide, spread them over areas where rats and mice frequent. The smell of the tomato combined with the spiral insecticide will be unpleasant to rodents, causing them to move away from the area.
To further increase the effectiveness of the repellent, repeat this process every few days, as the smell will eventually fade and the rodents can get used to it.
