I want to lime whitewash the inside of our new coop and am having a confusing time trying to find what I need. I read where I need hydrating lime or calcium hydroxide NOT dolomitic lime nor calcium carbonate, aka garden lime. Okay, so I go to TSC and can't find what I need. I tell the sales person and he goes in back and brings back a 20 lb bag of very heavy lime but it was inexpensive. Shame on me for not reading the bag before buying though! Once home, hubby mixes it with water etc., and it's full of stones and is a thick sludge! Evidently limestone is not what I want! One would think the sales person would know? Anyway, I go to the internet to google hydrated lime and all I see are bags with gardens and flowers etc. on them! I thought that hydrated lime was NOT garden lime? I also checked online at my local Home Depot and Lowe's, ACE Hardware and they do not carry hydrated lime. Does anyone in BYC land have any suggestions? Please?