I was skeptical about the 50-day claim but these refills actually keep the spring scent going for weeks on the low setting. The variety in the mix is nice too, so I'm not stuck smelling the same thing in every room.
Miles T.★★★★☆
I run these on low in my bathroom and they genuinely last close to the 50 days claimed instead of fading after two weeks like my old ones. Wish the spring mix had a bit more variety between the three refills, but the scent stays noticeable the whole time.
Owen I.★★★★☆
The spring mix refills actually hold their scent way longer than the old ones I used to buy—still noticeable on low after a few weeks. Only thing is the low setting is almost too subtle for a big living room, so I keep it on high in there.