Place the plyers around the cap of the bottle and gently squeeze and twist the cap off. Add 1/2 cup Hydrogen Peroxide, 1/2 cup Rubbing Alcohol, 6-8 drops Dish Soap and 2 tablespoons Dishwasher Rinse Aid to the bottle. Fill the bottle with water. Replace the cap (it just twists back on) and gently shake.
The largest cell in the human body is the female ovum, or egg cell. It is about 1/180 inch in diameter. The smallest cell in the human body is the male sperm. It takes about 175,000 sperm cells to weigh as much as a single egg cell.
So even the human body has biological cells larger than the ostrich egg. One might argue that, in terms of volume, an ostrich egg is still the largest in comparison to nerve cells, which may be very long but exceedingly skinny, on the order of 10 microns or less.