How can I effectively clean a toilet bowl without using a brush?

To effectively clean a toilet bowl without using a brush, you can try pouring a mixture of baking soda and vinegar into the bowl and letting it sit for a few hours. Then, scrub the bowl with a toilet scrubber or a pumice stone to remove any remaining stains. Alternatively, you can use a toilet bowl cleaner that is specifically designed to break down and remove stains without the need for scrubbing.