I live near the coast and I have accepted that some sand will enter my car. What I cannot accept is finding sand in my cupholders in November when I have not been to the beach since August. Sand has a way of hiding and reappearing months later like a tiny, gritty ghost.

The baby powder trick

This is the one everyone talks about and it actually works. Keep a bottle of baby powder or cornstarch in your beach bag. Before you get back in the car, dust it on sandy feet and legs. The powder absorbs moisture and the sand brushes right off instead of clinging to damp skin. Baby powder plus a quick towel wipe equals about ninety percent less sand tracking into your car.

The fitted sheet beach blanket

Put a fitted sheet in your beach bag instead of a regular blanket. Lay it upside down — elastic side up — and put your bag or cooler in each corner to hold the edges up. The sheet creates a contained, sand-free zone. When you leave, shake everything off into the center of the sheet and dump it out. The sand stays on the sheet instead of on your towel, your bag, your book, your everything.

Change before you touch the car

Bring a change of clothes and leave them in the car — not in your beach bag where sand can get inside. When you come back, strip off your sandy swimsuit and clothes outside the car. Shake them out thoroughly. Put on the clean clothes before you get in. This feels fussy but your car seats will thank you for the entire rest of the year.

Floor mat strategy

• Rubber floor mats: If you have carpet mats, swap them for rubber during beach season. Sand vacuums out of rubber mats easily. Carpet mats trap sand forever.
• Newspaper layer: Put a couple layers of newspaper under the floor mats. Sand that gets past the mats lands on paper instead of the car floor. Replace the newspaper after beach trips.

The post-beach cleanup that actually gets the sand out

Vacuuming alone does not get sand out of car crevices. The sand is too heavy. Here is the method that works:

1. Let the car interior dry completely. Wet sand sticks. Dry sand vacuums.
2. Beat the floor mats against a wall or fence first. Get the heavy stuff out before you vacuum.
3. Use a stiff brush to agitate the carpet and seats before vacuuming. The brush loosens sand trapped between fibers.
4. Vacuum with a crevice tool along every seam, not just the open floor space. Sand loves seams and seat tracks.

I do the baby powder and fitted sheet routine every beach trip now and my car floor is not a sand dune anymore. I still find the occasional grain in a cupholder but I have made peace with that. Some things you accept. Sand is one of them.