Digital BW, The Print

Dear Fellow Photographers,

I have been doing some research, including reviewing the archive of messages on DigitalBlackandWhiteThePrint, in the hopes of finding a less toxic spray fixative (for example, less toxic than PremierArt Print Shield Spray) for prints I intend to mount on wood blocks.

"Super Seal" (manufactured by Creative Imaginations) is reportedly "environmentally friendly":

http://www.willowwolfe.ca/super-seal.html

I was wondering if anyone had any thoughts with respect to "Super Seal" product as to:
1) toxicity during the spraying process (for example, as compared to PremierArt Print Shield Spray or Hahnemuhle Protective Spray for Fine Art Inkjet Papers & Canvas);
2) effectiveness in protecting the print; and/or
3) other relevant issues.

Thanks for your help.
Bobby (Lipman)