Controlled pH level is safe for most colors and fabrics, while effective on stains. Remains safe even when applying steam. Unlike ammonia, StreePRO's activity does not increase to damaging levels with heat. This simplifies your spotting routine by eliminating the need to rinse the stained area with cold water before flushing with steam. Used alternately with StreeTAN® tannin spotter, can often eliminate ball point, indelible ink, and marking pen stains.