ShelfYears

Does insect repellent expire?

Mostly not. SC Johnson's answer is that most OFF! products have no expiration date and can be used with confidence as long as the container looks to be in good shape and has not been through extreme cold or heat.

Updated

Insect repellent
Sealed
Doesn't meaningfully expire
Opened
Condition, not calendar
PACKAGING AND TEMPERATURE
Degraded performance

Sealed: Doesn't meaningfully expire Tier 1

SC Johnson publishes no shelf life for most of the OFF! range, and says so directly: most OFF! products do not have an expiration date and can be used with confidence as long as the container or bottle looks to be in good shape, and it has not been stored in extreme cold or heat. The exceptions are named — Botanicals and the Bite Relief line do carry a date, and it is printed clearly on the label.

After opening: Condition, not calendar Tier 1

There is no after-opening figure either, because SC Johnson's test is not a date. It is the container's condition and its temperature history — a bottle in good shape that has not been through extremes is good, and the example the company itself gives of the wrong storage is a garage over a cold winter.

How to tell it's gone off

  • The container's condition: cracks, leaks, a swollen or dented can, a pump that has gone stiff or sprays unevenly.
  • Product that has separated, thickened or gone cloudy in a clear bottle.
  • A printed expiration date — the OFF! Botanicals and Bite Relief lines carry one; most of the range does not.
  • Where it wintered. SC Johnson names extreme cold and heat as its own caveat, and offers a garage over a cold winter as the example.

If you use it anyway

Degraded performance

Repellent that has gone off stops working quietly: a weaker, patchier spray and a shorter window than the label promises. SC Johnson's own position is that most OFF! products have no expiration date and can be used with confidence as long as the container looks to be in good shape and has not been stored in extreme cold or heat. Nothing about an old bottle is hazardous — you notice it is not doing its job, and you stop.

Why it goes off — PACKAGING AND TEMPERATURE

The active ingredient in a mainstream repellent is a stable chemical, which is why the maker publishes no expiry for it. What changes is the package around it. Pumps stiffen, aerosol valves leak their charge, solvent escapes past a cap that no longer seals, and a bottle that has been frozen and thawed can separate. Every one of those shows on the outside of the container.

Every page here commits to one of four states — Harmless · Degraded performance · Equipment damage · Safety issue. How the verdicts work.

How to store it

SC Johnson's condition is the whole storage rule: keep the container intact and out of extreme cold and heat, and it names an unheated garage over winter as the case to avoid. Room temperature, cap or valve clean, container undamaged.

Sources