Answer: I wouldn't use deck stain indoors. It's designed for outside use. The VOC content of deck stain is large and making use of it indoors can be poisonous. The deck stain might also incorporate mildewcide that's also poisonous. The fumes might be solid. Semi-transparent. These color the wood but http://wood-deck-painters57936.blog5star.com/3878485/5-easy-facts-about-woodscape-deck-stain-described