This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to clean rubber bath mats
Prepare a diluted bleach solution in a bathtub.
If this is the tub that contains the bath mat, lift up the bath mat so it isn't stuck to the bottom of the tub. An easy and effective way to clean your rubber bath mat is to soak it in a diluted bleach solution in your bathtub.

Available choices:
-- Add about a teaspoon of bleach with a teaspoon of water and stir for a few minutes. A fresher-smelling rubber bath mat works well for this purpose..
-- If you have a deep or utility sink, that may be preferable. Be prepared to measure the amount of bleach to be used in making your solution and have more than enough room for a proper soaking..
-- This will not go in your tub and will work in a few minutes. You can purchase specially designed cotton cloths that are designed specifically for rubber bath mats..
-- The water should be hot, but not so hot that the mats touch. If you are planning to soak the mats, first place them into the water..
The answer is:
If you have a deep or utility sink, that may be preferable. Be prepared to measure the amount of bleach to be used in making your solution and have more than enough room for a proper soaking.