Some professionals recommend sealing the pavers to reduce dirt & grease absorption. We have never found a sealer that lasts longer than a year, in spite of claims by various manufacturers. Application and re-application can become very expensive (depending on the size of your roof area -- between $1500 to $2500 + per application).
Long handled stiff bristled plastic scrub brush (do not use a metal brush).
To avoid bleach splashing onto your pots & planters, place a large (opened) cardboard box upright against each planter. Scrub/rinse, re-place the cardboard against next planter.
For your information: The rust is caused by the iron oxide minerals in the paver combined with water -- and the metal railings, furniture and fixtures in your garden. The white residue, called efflorescence, is the lime released within the concrete carried by water to the surface of the paver.
Never use acid cleaners on your pavers.Clean grease stains immediately. Wipe off excess oil; apply detergent and allow it to sit for 10 minutes; then wash with hot water. If there is still a stain, scrub with bleach and baking soda. Never use amonia and bleach together; the fumes caused by this combination are dangerous to inhale.
Do not use this cleaning method on granite, marble, or other natural stone products. These products can be fragile and require a professional stone cleaner or restorer.
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