Do you have rooms that don't get used often? Rooms that are usually closed? Or perhaps have old furniture and books?
When there is poor air circulation or you have items which have not been cleaned for some time mould finds a stable environment to grow. When mould starts growing you will soon be able to smell its presence.
A regular cleaning regime is a start but not enough. The SAN-AIRtm product range has been designed for these types of problems. The products are safe for humans, proven and economical.
Try our Surface Mould Remover and Air Sanitiser combination pack to get started.