I found at least ONE street address for them listed on their site. It
is in their privacy statement page:
For additional information about our children's privacy practices,
please contact Ken Morse, Hill's Pet Nutrition, Inc. 400 SW 8th Street,
Topeka, KS 66603, (785)354-8523, or go to Contact Us to submit your
inquiry online.

they also list the same address here:
Our agent for notices of claims of copyright infringement on this site
may be reached as follows: Ken Morse, General Counsel, Hill's Pet
Nutrition, Inc. 400 SW 8th Street, Topeka, KS 66603, (785)354-8523, or
go to Contact Us to submit your inquiry online.

Hope that helps.

Personally I'd avoid their kitten kibble - for either ferrets OR
kittens! it really is a low quality but high priced product.

Cheers,
Kim

please visit :
for ferret help and info:
http://holisticferret.proboards80.com/index.cgi
http://ferretopia.proboards51.com/index.cgi
yahoo groups Natural Ferrets

for fun: 
www.vanityferret.com

[Posted in FML 6042]