Most parts of the country get a spring allergy season and then a break. North Texas does not, and anyone who has moved here from somewhere with a real winter works that out inside a year.
Cleaning will not fix an allergy. It can change how much of the outdoors is sitting in your bedroom at two in the morning, and that is worth doing properly rather than energetically.
The local calendar, roughly
Mountain cedar arrives in the depth of winter, which catches newcomers out completely because nothing is growing and the air is cold. It runs from around December into February and it is the one that puts people in bed.
Spring brings tree pollen: oak, elm, ash and the yellow-green film that turns every dark car in a parking lot the same shade. Grass pollen follows through the warm months, and ragweed arrives late in summer and stays into the fall.
Then there is the part that has nothing to do with plants. This is a dusty region with a lot of open ground, a lot of construction, and wind that carries both. That runs all year and is often the real culprit when somebody says their allergies are bad in a month nothing is flowering.
What cleaning can and cannot do
Pollen arrives from outside. No amount of cleaning stops it arriving, and any product promising otherwise is selling a feeling.
What cleaning changes is how long it stays and how often it gets stirred back into the air. Particles that settle onto a hard surface and get removed are gone. Particles that settle into a rug and get walked on for three weeks go airborne again every single time somebody crosses the room.
That distinction is the whole strategy. The goal is removal rather than redistribution, and most ordinary cleaning does more of the second than people realize.
Where it actually settles
Pollen and fine dust follow air, and air in a house moves in predictable ways. It comes in at doors and windows, moves along floors, and gets pushed around by the air conditioning.
The result is a reliable set of collection points. The floor within about six feet of every exterior door. Window sills and the bottom of the frame, particularly on windows that get opened. Return air vents, which are pulling household air through them all day. The top of a ceiling fan blade. And the entire surface of anything soft.
The places worth attacking first
- Entry floors and mats, which catch the majority before it spreads
- Window sills, tracks and the frame bottoms on any window that gets opened
- Return air vent covers and the wall immediately around them
- Ceiling fan blades, upward-facing surface first
- Bedding, and the top of the mattress under it
- Pet bedding, which is usually the most concentrated single item in a house
The order matters more than the products
Work top to bottom, always, and finish with the floor. Cleaning a floor first and then dusting a shelf above it means doing the floor twice or living with the result.
Vacuum before you mop rather than after, and vacuum slowly. A vacuum head moved quickly across carpet agitates the pile and lifts particles without collecting them. Two slow passes in different directions removes several times what one fast pass does.
Wet-wipe hard floors at the end. Sweeping a hard floor during allergy season is close to counterproductive, because a broom is very good at putting fine dust back into the air and not much good at capturing it.
Soft furnishings do most of the holding
A house holds allergens in proportion to how much soft material it contains. Carpet, rugs, upholstery, curtains, cushions and bedding are all reservoirs, and they release when disturbed.
Bedding is the one that matters most, because you spend a third of your life with your face in it and because it is the easiest to deal with. Washing it weekly in hot water during the worst weeks does more for a bedroom than anything else on this page.
Curtains are the one most often forgotten. They hang beside the opening the pollen comes through, they are rarely washed, and in a room that gets aired out they collect steadily for years.
What to change during the bad weeks
Keep windows shut on high-pollen days, however tempting a mild March afternoon is. One aired-out room can undo a week of careful work in about twenty minutes.
Take shoes off at the door, and mean it. Shoes carry pollen, grass, and whatever was on the pavement, and the difference between a shoe-on and shoe-off house is measurable in how often the floors need doing.
Change the air filter on schedule rather than when you remember. A loaded filter stops pulling particles out of circulating air, and in a region this dusty they load faster than the box says.
And move the frequency up temporarily rather than permanently. Several households we clean for step from every two weeks to weekly through the worst of cedar season and go back afterwards, which is a reasonable way to spend money on a problem that has a start and an end date.
