Yeah, that's a really low ratio.

Here's my theory: If you're mixing a 1:16 ratio and puffing on the pen all night long, it might give you a slight *bing* of tripping, but it would barely be noticeable unless you were puffing a lot.

I started with a 1ml/.25g of ejuice/spice and it did nothing for me. I tried four reasonably sized puffs, and although it tasted of spice, it didn't feel like anything.

I'm surprised that they're saying that even the other ratio you mention is capable of heavy experiences. IMO, we need to have at least .5g per ml to have notable affects unless you're puffing like a chimney for extended periods.