There have been some problems with expired flea products and with
imitation ones sold over the internet.  If the price seems too good
to be true WATCH OUT!
 
BTW, there are some EXCELLENT posts in
http://fhl.sonic-weasel.org
from
AFERRETVET
(Dr. Jerry Murray)
on parasite control.
 
Highly recommended!
[Posted in FML issue 4832]