good find. But as for Albert Einstein I haven't been there when he said so but as far as I know he was talking about four years, not days:
“If the bee disappeared off the surface of the globe, man would only have four years left to live”
Albert Einstein
source
Anyway this Einstein's idea just states the importance of the bees for people.
As far as I understand the person behind this product made quite a good research before making it (he was consulting with the natural bee keeper and trying to be the beekeeper himself as he says on his site) so I guess we can trust/rely on this solution.