WARNING: You're going to be taking this on the chin, as I didn't like it. I'll try to be as constructive as possible.
I'm not a video expert, but what the hey 
I will semi-live post my experience:
Hmm, what's going on here, why's there no sound?
6 minutes?! I'm never going to get this time back 
Oh sound. Hmm, Symphony no.5. We'll see.
Ugh, is all the font Arial?
So you guys renovate houses or provide storage for redoing houses. Pretty cool examples.
Wait a minute, I don't believe these are actual examples เฒ _เฒ
Bored now.
Super bored now.
Skip, skip.
You really don't know what I'm thinking.
I still have no idea what you're trying to sell me.
Okay. Products. Let's see.
Flashing by too quickly.
EPILIPTIC FIT
Topical Charlie Sheen reference. I'll give you that.
1 minute of credits?!
I'm not a big fan.
Firstly, I'm not going to watch a 6 minute advert. Realistically you've got 20 seconds to pitch me your product or hook to get me to continue watching. If you hook me I'll watch for up to 2 minutes if it's consistantly entertaining. Not having sound at the very start has immediately got me looking elsewhere or thinking about clicking back.
As for having to convince people it's safe to buy online, if you're pitching to that market they're not going to be persuaded by a video with a talking dog. Identify who you're targeting and maybe split the video up into different parts tailored to each.
Apart from the Charlie Sheen reference I didn't find it entertaining enough to carry me through the first 90 seconds, let alone the remaining four and a half minutes. You'll need something a little more wild to tap into the psyche of a frequent web user like myself and your secure message and charity message lost my attention even more.
Change the font, it's boring.
Make sure your logo's are proportioned correctly and not squashed.
Less of the dog, MUCH less text, less assuming you know what I'm thinking.
The save the Earth thing didn't work for me as you never went into any green credentials or how you're 'doing your bit'. I'm left with the impression that was just some nonsense you threw in there.
You need to focus a lot more on what you sell as it's unclear.
Ultimately I'd go back to the drawing board and come up with a (or several) shorter video(s).
Show the problems your products fix or why they're cool, couple it with something 'zany' and then get it in front of people who need to know about it and hope they share.