That's a somewhat different topic, but it's relevant. Not all scientists can be relied on to deliver accurate claims. Case in point:
http://news.sciencemag.org/scienceinsider/2011/10/report-dut...
All Stapel's papers were published in refereed journals. It will be years, possibly decades, before Stapel's many retracted papers are no longer referenced in the scientific work of other psychologists.
My point? Advertising copy must be vetted by knowledge, not appeals to authority. It only took me 15 seconds to find a source that falsified the claim about mosquitoes, and it's not my field. It can't hurt that I knew it was false at the outset.
The problem with claims about mosquitoes and light is that there are a lot of dishonest vendors who lie about this, and a copy writer with insufficient training will almost certainly repeat the lies of others. I think that's what happened in this case.