I donāt comment often, but am I missing something here? The final picture of this product in position, shows it āguardingā a sliding glass exterior door.
It appears to me that the door has its slider on the outside and the guard is āprotectingā the fixed, non-sliding panel.
OOPS?
My sliding glass door is installed with the slider on the inside, and this product would work just fine, f I hadnāt already found a FREE solution.
I used an old adjustable crutch to block the slider pane from sliding! Iāve used a similar solution for my exterior man doors by using two adjustable crutches connected at their bases, to span the distance from the doorknob to either the floor or ceilingā¦
This product certainly appears to be an additional protection to door locks, when installed correctly.
Safety first, thanks for reading, I hope this helps you!
Looks like both doors slide. But how will you guard your doors if, God forbid, you ever need to use the crutches again?
The white or black could match the doors and be fairly inconspicuous vs the old crutch solution. Otherwise, burglars can see when you forget to jam. I do like the doorknob setup. It looks like something you can keep stashed in the corner, but set up fairly easy if you ever hear something go bump in the night. A baseball bat canāt do that.
It looks like the sliding door is not properly installed in the last photo - the sliding pane should be on the inside track, not the outside one.
Purely optics here . . . The picture is exactly the same as my sliding doors.
Left side (front track) is the door that slides left to right. Right side door (outside track) is fixed. I think the arrows might be confusing people as they are there just to show that you stretch the Guard Dog from end to end thereby preventing the door from sliding.
Simple enough then- just install the jam outside.
Looking at this item has me wondering why a patio door would have the sliding door on the outside rather than the inside. A quick run through in my memory of condos in which I have lived: all the patio doors that Iāve had in my life have had the sliding door on the outside. I never noticed it before or cared but this would be a great security solution if the doors were swapped.
While this does function as a standard door block, for sliders, the solution is far easier, quicker and cheaper; an adjustable shower curtain rod.
For $3 or so, you have your choice of colors, available at any home store, adjustable to nearly any size, that holds the base of any sliding glass door as tight and firm as anything. I used one for years, and nobody ever even knew it was there.
Yeah, that would work. We just cut wooden curtain rod the correct size and have been using it for over 10 years now.
I have a different brand of these and work great. Use them on all my doors. At least gives you extra time to ācall the policeā or whatever 
you need to do. We used an old wooden broom handle cut to size for our slider when I was a kid. Worked great too.
For sliding doors, a piece of closet rod (wooden dowel) or a piece of 2x4. Tho a specially-made bar at the middle height looks nice while sending the message ādonāt even tryā.
I have used these door jammers for years, great for doors a long way from anything to brace against. For extra security, put a screw or 2 with tall heads into the floor for the bottom jammer to push against.
Uhm, yāall know that you can choose for your sliding door to open on the right side or left side. (I just had one installed). The photo is correct for a left opening door.
My dad would put a 2 x 4 ? cut to just the right length & place it in the track when not in use.
Note: this was a few decades ago.
The outside door has a ālipā that completes itās seal, the non sliding door is providing the brace. You canāt open the door in this configuration with the device in place.
Broom handle. Itās round and normally fits inside the track. Not easy to remove. A small finishing nail a few inches from the end is all thatās needed to remove. I have one painted black. You canāt really see it from outside the door so short of breaking the glass, no way to get it out.
I believe the concern is the installation of the sliding vs. fixed panels of a sliding door.
Regardless of whether the door is right/left handed, the fixed/stationary part of the door is usually on the track that is on the outside of the building while the sliding part is on the inside. As pictured, the rod is barricading the fixed/stationary part of the door which kind of defeats the purpose.
I have never seen one, but I supposed itās possible to have a sliding door where both panels slide which in that case the picture would be correct. However in that situation it still is only barricading one of the panels. The other is still free to move when unlocked.
For this correct left-opening door, the Guard Dog Adjustable Door Jammer is supposed toā¦make people trip as they enter? Because in the picture it is jamming the right side of the door that (as you perfectly observed) isnāt the one that opens.
I tried something exactly like this on our front door, after 5 medium pushes it gives way enough to get in the door. So, it could work if they give up, but probably wouldnāt stop a determined person. It would work well if it was propped up against something on the floor that doesnāt move.
Did everyone get the non-marring yoke but me?