Carpet: every 12–18 months, or 6–12 with pets
Carpet works like a filter. It traps dust, pollen, pet dander, and the fine grit that comes in on shoes — and that grit is abrasive. Left in place, it slowly cuts the fibers and creates the dull, matted traffic lanes people mistake for permanent wear.
Households with pets, children, or allergy sufferers do better on a 6 to 12 month cycle. Vacuuming weekly between cleanings removes surface soil, but only extraction pulls out what has settled to the backing.
Tile and grout: every 12–24 months, sealed after
Grout is porous, so ordinary mopping tends to push dirty water into it. That is why grout lines keep darkening even in a home that gets cleaned regularly. Deep cleaning removes the embedded soil, and sealing afterward slows how fast it comes back.
Showers and entryways need attention sooner than the rest of the house. Moisture plus soap residue is where mold and mildew get started, and deteriorating grout eventually lets tiles shift.
Windows: twice a year in most of the Inland Empire
Spring and fall works well locally. Spring clears the pollen and wind-blown dust, and fall gets the glass clear before the low winter sun makes every streak obvious.
Homes near open land, canyons, or heavy sprinkler overspray often prefer quarterly service. Sprinkler water is the quiet culprit — the minerals it leaves behind will eventually etch glass permanently.
Natural stone: clean routinely, polish as needed
Marble, travertine, and granite need pH-neutral cleaning, not the acidic sprays sold for general use. Citrus, vinegar, and wine etch the stone itself, leaving cloudy spots that no amount of scrubbing removes.
Plan on sealing every year or two depending on use, and polishing when the surface has lost its reflection or picked up etch marks.
The short version
Regular maintenance is far cheaper than replacement. Carpet, grout, glass, and stone all fail early for the same reason: abrasive soil and moisture left in place too long. A predictable schedule protects both the look of your home and its value.