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Does Mosquito Repellent Expire? - Kylon Powell

Writer Sarah Silva

Mosquito’s sprays come with an average shelf life of three years. After that you ought to get rid of them not to hurt you, but rather because they might not be as efficient in repelling mosquitoes. The expiration date of a bug spray is dependent upon the ingredients that are active. The majority of active ingredients found for mosquitoes repellents are durable and can last for quite a while. However, even when the active ingredients aren’t expired, the overall formulation may be less effective as time passes. Look inside the spray container to see what kind of chemical is being used to repel mosquitoes. Here’s how long active ingredients last.

DEET containing mosquitoes repellent

Most widely used mosquito repellent sprays, such as off, contain the active chemical N, N-diethyltoluamide, also known as DEET. DEET doesn’t expire. It is extremely stable and lasts for a long time.

Silky Terrier Dog Breed Playing Aro... Silky Terrier Dog Breed Playing Around

Picaridin containing mosquitoes repellent

Picaridin is a different chemical that works well at repelling mosquitoes. Similar to DEET, Picaridin is a chemical that remains stable. The expiration dates of picaridin repellents are not typically marked on the bottles. Some brands that contain picaridin include Sawyer as well as Ranger Ready.

IR3535 containing mosquitoes repellent

IR3535 is a term commonly used to describe ethyl butyl acetylaminopropionate. Bug repellents containing IR3535 usually come with expiration dates since this chemical is more in a state of stability in comparison to DEET and picaridin. After 18 months, the product has reached the end of its useful life.

PMD containing mosquitoes repellent

Similar oils are present in sprays such as Repel as well as Off Botanicals. PMD, or para-menthane-3, 8-diol is the synthetic name for OLE. Repellents containing this active ingredient will last for long time periods and likely will not come with an expiration date at the bottom of the bottle.

Tips if mosquitoes repellent are expired

Spray a small amount of repellent in the air right in front of you. Inhale the repellent. If the product doesn’t smell as it usually does, it’s likely to expire. If you’ve got an anti-gel or cream make sure you squeeze it from the container. Look for any odd smells. If the product is dry it’s likely to be ineffective and has become old.

Check the product’s package to see whether it’s damaged in any way. If the container is rusty or the tube has been lacking the cover, as an instance replacing the repellent by a new product.

Disposal of mosquitoes repellent

The method of disposal for mosquitoes repellent is dependent on the type of container in which the repellent is packaged. If the container isn’t refillable be sure to empty it prior to getting rid of it (follow the instructions on the product’s label). If, for instance, it’s not an aerosol spray, place it into a container of litter that will be later disposed of in the regular garbage. If the repellent can’t be cleaned by your waste management agency. In the next step, reuse the empty bottle.