GYT wrote:
What does the cat litter do? I've heard to use rock salt.
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Kitty liter is made from clay.

There are 2 types of kitty liter, the common plain baked clay, and the
more
expensive clumping type. The clumping type has a odd clay (Bentonite)
that
absorbs water, swells and this clay is often used to line farm ponds to
seal
against the water draining into the soil.

Even the normal, non clumping, type holds water very well reducing the
resistance of the ground "rod" to the adjacent soil.

I have had much better luck with epsom salt. Less corosive, and less
toxic
to the lawn. Table salt is a killer on most grass.

People also like Coper Sulate, but I have read several studies by
companies
like PolyPhaser where they compared common soil treatments for
effectiveness,
cost, toxicity etc. The minimal difference between the (fairly)
nontoxic epsom salt
and the very toxic coper sulfate was shown toi be very minimal. Here
in KY if you
are caught using copper sulfate you will face serious fines.

Regardless of what type chemical, table salt, epsom salt, or copper
sulfate,
you use, you have to replace them as they leach form the soil.

Terry