Bear Spray Oil vs. Tear Gas Powder: Two Different Cleanups

Same sting, different substance

Bear spray and personal pepper spray contain oleoresin capsicum, usually called OC: a concentrated oily extract of hot peppers, with capsaicin and related compounds doing the burning. It comes out of the can as a forceful fog or stream of droplets carried by a propellant. When it lands, it behaves like a sticky, colored oil.

Police tear gas in the United States is most often CS, a solid that is dispersed as fine particles. Some agencies also use OC or synthetic capsaicin (PAVA) in projectiles and sprays. After an incident, a home may hold one residue or both, so it is worth asking the agency what was deployed.

How the two residues behave

Bear or pepper spray (OC)

Oily film, often orange or reddish where it landed heavily
Concentrated near the point of discharge rather than evenly spread
Smears when wiped dry; needs a degreasing detergent and repeated rinsing
Soaks into fabric, foam and unsealed wood
Can transfer to hands and then to eyes hours later

Tear gas (CS)

Fine dry powder, sometimes a faint white film
Spread widely by air movement, including into closed rooms
Becomes airborne again when swept, shaken or blown
Collects in carpet, bedding, upholstery and return ducts
Often accompanied by debris from the canister or entry

What changes in the cleanup

Cleanup question	OC spray residue	CS powder residue
First tool	Absorbent pads and degreasing detergent	HEPA vacuum and careful ventilation
Biggest mistake	Wiping with a dry cloth and spreading the oil	Sweeping or using a leaf blower or ordinary vacuum
Scope	Usually a zone around the discharge point	Often the whole house, plus closets and ducts
Fabric	Spot-heavy staining; launder separately with strong detergent	Light, wide contamination; many items need washing
Air system	Matters if spray reached a return or ran in a car with the fan on	Almost always part of the scope

Clues that tell you which residue you have

A spent spray can, safety clip or bear spray holster near the problem area points to OC.
Orange or rust-colored droplets on walls, glass or a dashboard point to OC.
Canister fragments, a burn mark or a hole in a window after police activity point to CS or a mixed deployment.
Symptoms throughout a house, including rooms with closed doors, suggest airborne powder.
Burning that appears mainly after touching a surface and then your face suggests oily residue.

General information for Berkeley, not a quote or professional advice. In an emergency, call 911.