Deborah,
We began using the Sentricon system for our four historic structures here at
Redcliffe Plantation last summer.  Our decision to go with the system was
based on a couple of things.  First, our 1859 mansion has a concrete
basement/first floor which is apparently difficult to treat with the
traditional chemical application (i.e. the 3" deep trenching that needs to
be done on the inside and outside of the foundation).  Second, the mansion
did not have any signs of active infestation which is better treated, at
least initially, with traditional drilling and trenching.

The historic outbuildings, including a slave cabin, have all had "hits" on
the bait stations since they have been installed.  We have a very thorough
pest control company that has conducted their inspections like clock-work.
They, in turn, have added more bait and termiticide stations as needed after
the "hits".

My advice is this:
1. First get several inspections by several companies and compare their
subsequent bids.
2. Get a third party, we used the Clemson Agricultural Extension, to verify
any claims of active termites.  You could call you Ag-extension or you might
have a city or state regulatory agency that handles pest control companies
you could request an inspector from.
3. Determine if there has been integrated termite treatment in the past.  It
might help determine how aggressive your treatment needs to be.
4. Determine if you are willing to have holes, albeit small ones, drilled in
your historic structure's foundations.  You will probably have to on the
structure that is already infested, so don't fret over that one.
5. If don't want holes drilled, and if your can afford it, get the
Sentricon.
6. Keep in mind that when you sign the contract with the pest control
company, the Sentricon system is only as good and the regular inspections
that they make-get their inspection schedule in writing!

To close this long winded response, the best selling point for the Sentricon
system is that its termiticide (i.e. actually a growth inhibitor) is the
best on the market.

Hope this helps,
Fielding Freed

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