Depending upon usage
I will come to your property and will put down dust sheets prior to checking there is a clear area to work in with no obstructions/breakables. Then I will bring in my vacuum and brushes and rods. I look up the chimney to check the lower the part of the chimney. Making sure there are no burning embers in the grate, I will seal the fireplace with sheets, join the rods together for the required length, sweep the chimney with the appropriate brush. I then vacuum the soot and take all debris away.