D/2 Biological Solution Set - Mini

How many stones can be cleaned with this set, assuming an average size stone with two applications each? Also, does the set include step-by-step cleaning instructions in the package? I'm sending this to a friend who has never cleaned a stone before. Thanks for any info.

D/2 Biological Solution has coverage of roughly 250-300 square feet/gallon. The quart size, therefore will clean roughly 60-75 square feet. You can get away with 1-2 sized average stones with the quart! We are working on creating a small flyer with simple instructions to include in our kits. We recommend spraying the D/2 Biological Solution onto the entire stone, scraping and scrubbing (with scraper and brush included in the kit) problem areas where growth has built up. After proper scrubbing, rinse the stone with water! The D/2 will continue to act on the stone in the coming weeks where maximum effect will be achieved.

Can D/2 be used on a colored headstone? I'm not 100% sure if it's marble or some other type of stone, it's a light pink/mauve color.

Aboslutely. D/2 is safe and effective on all types of stone no matter the age or color. Marble, granite, slate, brownstone, sandstone, etc. D/2 has never been documented to harm a stone and is completely safe to use and nontoxic.