How Often Should You Check Your Emergency Kit?
Every six months — ready.gov's kit maintenance guidance calls for a semiannual check, which many households tie to the daylight saving time changes: rotate water and food, test batteries, check medication dates, and resize the kit for household changes.
The one thing to know: the 6-month interval isn't arbitrary — it matches the rotation rule for self-filled water storage, so one calendar reminder covers your water, your food dates, and every battery in the kit at once.
The six-month checklist
- Water — dump and refill any tap water you stored in your own containers (the 6-month self-fill rule); confirm commercially bottled water is still inside its printed date.
- Food — rotate anything approaching its date into normal pantry use and restock; confirm the manual can opener is still in the kit.
- Batteries — test the flashlight, radio, and CO alarm; replace spares that have been sitting.
- Medications — check expiration dates on prescriptions and the first aid kit's contents.
- Household fit — resize for changes: a new baby (formula, diapers), a new pet (its own food and water), changed clothing sizes, new medical needs.
- Documents — confirm the copies of ID, insurance, and medical records are current, and the digital/cloud backup still exists.
The full baseline the check maintains is on our 72-hour kit checklist, and every interval above appears with its source in The Preparedness Numbers.
Gear that depends on this check to keep working
Research-based picks (how we evaluate) — live Amazon search links, no prices or ratings, an honest drawback on each.
Water Preserver Water Preserver Concentrate
Liquid stabilizer, treats up to 55 gallons, extends storage to 5 years per label
A pre-measured alternative to counting bleach drops, letting stored water go years between rotations instead of 6 months.
Best for: Buyers who want to store water once and not think about rotation constantly
Watch out: This is a storage stabilizer, not a substitute for boiling or a certified filter if the water source itself is questionable — read the label's exact dosing.
Check price on AmazonMidland WR120 Battery-Powered NOAA Weather Radio
NOAA/SAME alert, AC/battery powered, desktop unit
The lowest-cost way to get real SAME county-level alerting if you don't need portability or hand-crank power.
Best for: A stationary home base-station radio, kept plugged in with battery backup
Watch out: No hand-crank or solar option, so it depends entirely on batteries once the power's out — keep spares and check them at your 6-month kit refresh.
Check price on AmazonDEWALT Portable Jump Starter with Air Compressor
Battery jump-start pack, built-in 120 PSI air compressor, USB output
Removes the need for a second vehicle to jump-start your car and doubles as a tire inflator — two common roadside failures in one device.
Best for: Anyone who drives alone frequently or in areas without reliable cell service to call for help
Watch out: These packs self-discharge over months — it needs a place on your 6-month kit-refresh checklist to verify it still holds charge.
Check price on AmazonFrequently Asked Questions
Every six months, per ready.gov's kit maintenance guidance — many households tie the check to the daylight saving time changes so it never gets skipped.
Rotate self-filled water (that's its own 6-month rule), rotate food approaching its dates into pantry use, test and replace batteries, check medication expiration dates, and resize the kit for household changes like a new baby, a new pet, or a member with new needs.
No — the 6-month rotation applies to tap water you store yourself in your own containers. Sealed, commercially bottled water is rotated by its printed 'best by' date, typically around two years.
Battery-dependent items: portable jump starters self-discharge over months, standalone battery radios and flashlights sit on aging batteries, and CO alarms need their own battery checks. These are exactly the items to put on the semiannual list.
Ready.gov frames kit maintenance around household changes, not just expiration dates — a new baby needs formula and diapers, a new pet needs its own food and water budget, and outgrown clothing sizes in a family kit are a classic silent failure.