Or you could spray.

So you've got traditional things like pepper spray, O.C. spray up at the top there, or Tasers over here.

You create a spray of detergent.

You saw the spray going in.

Mary carries pepper spray in her purse.

So one of the things I particularly looked at was the use of O.C. spray, oleoresin capsicum spray, pepper spray, by Australian police and seeing when that had been introduced, what had happened and those sorts of issues.

Then the spray dries. It turns into powder.

That's going to spray cells over that area.

And with that, what this graffiti says is, High tech schmigh tech.

You could do the same with a space spray.

The walls of many of the house's rooms had graffiti scrawled across them.

And I saw a lot of graffiti from the 1800s, like this one.

You can spray the problem is there are environmental issues.

I was doing graffiti writing my name everywhere, using the city as a canvas.

I was doing graffiti writing my name everywhere, using the city as a canvas.

So I actually spray painted a whole bunch of them brown.

You can spray paint it you can do anything you want.

Now when they introduced O.C. spray in Queensland, they were really explicit.

Attempts to acquire specific spray dryers also failed for the same reason.

These kids did a little graffiti on their desks, and then they signed up for two extra courses.

And this graffiti artist has come along, made this sign a little bit better, and then moved on.

And when you clean a penguin, you first have to spray it with a degreaser.

I was looking for a picture of graffiti, little text input language, and I found the website dedicated to teachers who want to make these, you know, the script writing things across the top of their blackboard, and they had added graffiti to it, and I'm sorry about that.

One of the tricky issues we had with the Giuliani administration was I had forgotten how anti graffiti he was.

No evidence was obtained by the United Nations inspectors that Iraq had spray dried agent in bulk.

Some of those taking part in the protest could be seen writing graffiti on the walls against the interim President Michel Temer.

They're not obeying the directions that we're giving them, so we'll give them a shot of the O.C. spray.

Well, the surface of the spray coating is actually filled with nanoparticles that form a very rough and craggly surface.

Water based sunblock with a strong penetration is often applied to oily skin. Sunscreen spray is also a good choice.

But anger is like gasoline, and if you spray it around and somebody lights a match, you've got an inferno.

The walls were left with gaping holes, floorboards were ripped up, rubbish was strewn over the floor and graffiti was daubed on the walls.

And they wanted to celebrate what's beautiful about Kibera and Mathare the photojournalists and the creatives, the graffiti artists, the teachers and the entrepreneurs.

This energy is immediately converted into a spray of subatomic particles, with detectors and computers used to figure out their properties.

The environmental affects may include diurnal temperature cycling, vibration, shock, humidity, solar radiation, precipitation, sand dust, salt spray and electromagnetic radiation.

Forensic sampling and analysis of spray drying equipment present at Al Hakam in 1996 revealed no traces of biological warfare agents.

The person who's spraying the O.C. spray is wearing a rubber glove to make sure they don't get contaminated and so on.

As you can see, he's heavily influenced by graffiti and street art, and his home city of Mumbai is an ever present element in his work.

These trials involved munitions supplied by the Iraqi chemical weapons programme and an aerosol spray device modified specifically for the biological weapons programme.

And before I tell you about that, I just have to tell you this one little picture of graffiti there I picked off the web the other day.

What I have here is a cinder block that we've coated half with a nanotechnology spray that can be applied to almost any material.

The murals were done by a graffiti artist to commemorate the hundreds of homeless people that got relocated from the tunnel in 1991 when the tunnel reopened for trains.

We found activity in some cells called the A10 cells, cells that actually make dopamine, a natural stimulant, and spray it to many brain regions.

The spray dryers at Al Hakam lacked the required biological safety containment features, which Iraqi scientists recognized as a necessary condition for their own protection.

But I was in Milan and saw this street sign, and was very happy to see that apparently this idea of minimalism has even been translated by the graffiti artist.

In the collective greenhouse of Donglin village of Taicang City, the 48 year old Wang Xuefen is leading workers to pear spray pesticides on pear trees.