I run a "Search only" campain,
I don't get a lot of traffic on "the low search volume keywords"
Thanks
is way too long tail of a keyword to ever get traffic on Google. However, if you're not getting any traffic on it, it doesn't hurt to keep it in the account.
However, if you're getting a .08% ctr on google search then you really need to work on that. That's really low for any niche.
To improve your CTR you need to write better text ads and potentially split your ads/keywords into more highly-targeted ad groups.
If your CTR is below 1% you should work on it. Don't surrender, just tweek your ad copy, split test, and try to find the correct keywords.
Use: [adwords.google.com...]
to find the best keywords for your search.
If you put "Commercial Painting company south sore of Montreal" in that tool you'll see it doesn't get any searches, so that's how I know you haven't used a Keyword research tool.
Start looking for keywords like "painters montreal" and go from there...
Don't surrender, trust me, SEO will take more time and patience. I know Adwords can be hard some times, but at the end it will pay off...