Best way to clean pressure barrel after use

[GhostShip]

I have bottled my latest brew this morning. When I went to sanitise the barrel (I transfer from the FV to a barrel to get rid of the debris and sometimes to batch prime, before bottling), I noticed some crud sitting on the ledge above the tap inside the barrel. My bottle brush wouldn't reach it and nor would much else. I poured boiling water on it and soaked it, which got rid of most of it. This is all my fault - I left the barrel and FV after my last brew and they dried before I then cleaned them. Lesson learned.

An FV is easy, but it's impossible to scrub or brush the inside of a barrel. I now know I need to clean it as soon as I've used it, but what's the best way of doing this? It doesn't need to be sanitised, as I'd do that before I used it again, but I need something I can leave to soak that will get rid of any nasties. Thank you for any suggestions.

 

[Clint]

Hot oxi. Give it a long soak with a few shakes...but keep the lid loose or off as it'll implode.

 

[GhostShip]

Thanks, Clint. I googled 'Oxi' - I assume this is the stuff?

 

[Clint]

Go to BM BARGAINS get the Astonish in the pink tub...2kg for £3!