Cleaning tyres

[Allan1875]

Had a wee look through the search function and couldn't find an answer to this.

How do you clean your tyres after a meeting?

I found this video on youtube:
http://www.youtube.com/watch?v=gzgjd511Aa8

Now as far as i'm aware, that product isn't available in the UK, not that i could find. Does anyone use anything similar?

Edit: I've since found simple green in the UK, however, any alternatives?

I was thinking it can't be great to just leave them dirty, can't be great for the rubber over time? Ideally we want to keep them in the best condition possible?

Any info from you guys is appreciated.

I may add, i have a full set of wets and drys from the last meeting to clean which was only my 2nd outdoor meeting so it's quite new to me.

I also don't want to break "23.9 No additives other than water will be allowed on any tyre."