To fully and properly flush out your bowels you need to perform a colon cleanse using either home remedies or by using colon cleanse powders etc.
You can buy over the counter colon cleanse pills or use colon cleanse powders that you can mix with water and drink to help cleanse your colon.
You can also make a natural home remedy colon cleanse by taking a 1/2 cup Apple Juice, add 2 tablespoons Lemon juice and a teaspoon of ginger juice and mix it in 1/2 cup of warm water.
And drink that mixture to help flush out your bowels and cleanse your colon.
You can drink that mixture daily or take the colon cleanse powders or colon cleanse pills daily which will flush out your bowels and keep your colon healthy to prevent colon cancer.