[bartimus]

It's always been bad. But Google has always been less bad then other search engines.

Then also you need to ask the right question. Googling something like "Toyota RAV4" will give wildly different results than "common problems with Toyota RAV4".

In this particular case the better question should've perhaps been something like:

"scientific evidence effectiveness lazer bacterial reduction"

[asdff]

There are times when I just cannot come up with the terms to get past the SEO at all and just give up, not knowing the answer or finding the relevant source. It seems like it happens all the time these days. You end up with something like writers block coming up with new ways to frame the question to shake off the spam. The best I can hope for usually is appending site:usuallyrelevantinfo.com to a term but that requires a priori knowing these good sites for a given topic.