🦟 Insect repellent

A screener will identify the can on X-ray or by hand inspection, check the size, and confiscate it if it exceeds 100ml. You will not be given the option to transfer it to checked baggage at the checkpoint — it will simply be disposed of. To avoid losing an expensive can, check the volume before you pack and move anything over 100ml into your checked bag.

Every format counts as a liquid under the carry-on rules: aerosol spray, pump spray, lotion, roll-on, and solid stick are all treated the same way — each container must be 100ml or less and must fit in your one-litre clear bag. There is no format that bypasses the liquid restriction, unlike solid lip balm or solid deodorant in other categories.

The 100ml rule for liquids is applied consistently in the US, EU, UK, Canada, and Australia, so there is little regional variation for insect repellent. The officer on duty may apply some discretion near the borderline — a container labelled 95ml that appears to have been used will almost never cause a problem. A 100ml container that has been refilled to the brim and is clearly over the original capacity is a different matter.

Pack large cans or bottles in your checked baggage and carry only a travel-size container (100ml or less) in your carry-on for immediate access. DEET-based repellents are also flammable, so do not pack them near heat sources or in locations where they could be crushed and leak. If you are checking multiple aerosol cans, be aware that airlines impose limits on the total quantity of flammable aerosols per passenger.