Dear Sir,
1. Chlorine bleaching liquid. -- to clean wood only. use mix with large amount of water. ( do NOT use on color fabir, silk, fur, leather and metal surface)
After the cleaning till it totally dried, then use photocatalyst.
2. The carpet hide lots of bacterial and mould. -- steam clean, the main function of photocatalyst is clean the air and maintain, it works well on the condition of cleaning environment.
Make sure everything is clean, no dust, then it would work on the adjusted process.