Thermal Insulation Research

Given the following qualities of thermal insulation for a structure:

• fire resistance
• not messy – ( not blow in ) 

I found rock wool to be the best choice for insulation.

Products at home depot that fit this description:

• Safe 'n' Sound 3 in. x 15-1/4 in. x 47 in. Soundproofing Stone Wool Insulation (12-Roll)
• HomeDepot: Rock Wool