Cleaning Class A Pipe Wire or Poly?

[southbalto]

Last night I picked up a 6" round wire brush to clean a Class A chimney system that was installed last year. It's about 24' with two 30 degree elbows.

I have good access to the cleanout tee and my thought was I would just use a rope with one person up top and another at the bottom.

Question for the forum......Is ok to use the typical wire brush or do I need poly?

Thanks

 

[DAKSY]

Use the wire