Lime is CaO (Calcium Oxide) and it is hygroscopic-i.e., water absorbing.
Unless one used lime right from a kiln, lime picks up around 1% H2O.
Now if you mix lime with water, you get calcium hydroxide Ca (OH)2. In most
tropical countries, this hydrated lime is pained on walls. Yes- it kills
most bacteria.
All pulverized lime is hydrated unless you store in Nitrogen atmosphere. The
lime that is used in gardens is just lime (pulverized or otherwise) which
has naturally picked up some moisture.

"Joseph A. Zupko" wrote in message
. ..
I mean
"Joseph A. Zupko" wrote in message
news
Are they both the same thing but one is processed differently?
I see gardeners at the community garden use lime. They said it keeps the
insects and animals eating there plants. Is there any truth behind
this?