In anticipation of Tuesday's protests, the San Diego County Sheriff's Department has banned certain items from the areas President Trump is visiting. There are 25 items on the list, including the usual suspects -- firearms, knives, axes, tasers, baseball bats, mace.
But one thing in particular caught our eye: bear spray. We wanted to learn more about what that is, so we reached out to Mike Davis. He's co-owner of the website, pepper-spray-store.com.
Davis says bear spray has the same active ingredient as pepper spray, but in a lower concentration. Both are made from chemicals in extremely hot peppers.
As its name indicates, bear spray is meant to be used against bears.
If anybody gets hit with pepper spray, it hits the mucus membranes. Everything swells up, and it feels very difficult to breath, and everything swells shut. That's enough to make a bear not want to continue to chase you.
Bear spray is usually formulated to spray longer distances than other pepper sprays, Davis says, sometimes as far as 20 feet.
Someone doesn't have to get extremely close in order to cause a lot of problems. If you can be 20 feet away from the stage or 20 feet away from where someone is presenting, they don't have to get in real close.
Another reason bear spray can cause trouble: Davis says it can be made in large canisters so it can be used to hurt more people.
California puts size limits on pepper sprays because they're meant to be used for self defense against people, but animal sprays aren't restricted.