A simple way to secure any sliding door is with a security bar put in place so that the door cannot slide. The bar needs to be removed in order to allow the door to be opened, limiting the usefulness of this approach. However, when securing a home from invasion it is effective.
We carry a security bar manufactured by Master Lock out of 20 gauge steel. The bar has a forked end which allows it to be put under an inside door knob and prop the door closed. It can also be put in the track of a sliding door.
Also listed in the category of miscellaneous security products is a .5 oz spray bottle of pepper spray. It comes in a leather holster that makes it easy to carry for the last line of defense.
Find security behind a barricaded door by adding a security bar to any sliding door. Pepper spray is the last line of security.