Yes the Scentsy cubes are smaller than Yankee tarts, but I've found it's not the size but the level of scent in the wax, and they are loaded! The cubes are about an inch or so, but I only ever use one at a time. Scentsy wax is soy wax, so it melts easier, and you can just wash the warmer out with soapy water. I've been told they are non toxic which is helpful if you have curious pets. Not sure about Yankee or Walmart ones. I can easily use one cube of almost any brand for a good full day without losing scent, but after that it seems to start fading. I have a small plug mounted warmer that we use as a night light in the bathroom, and it's on 24/7, and I would say 3 days is about it for that one, before the scent is gone. I love the warmers, because we have 2 cats, and while we try to keep them off tables, they just wait until we aren't looking lol. I wouldn't want them to get burned on a lit candle or start a fire, but with the warmers there's no risk. The worst they could do is knock it over and make a mess. I was always afraid of leaving a candle lit and accidentally leaving, and it happened once or twice, but again, no risk with warmers (basically the same as leaving a small lamp on) I don't even think about it anymore.
