Recycling's dirty little secret: Processing plants use up to 100, 000 gallons of water a day, mostly to wash crusty food and chemicals off containers before they can be ground up.

Kitchen and toilet should choose some relatively low water absorption of bricks because the ground water to wash frequently.

As a standard rule, anytime a wash mitt is dropped to the ground, it should not be returned to use but instead should be either discarded or cleaned.