The plug inthe wall warmers use a 15 watt bulb. I have no idea why you got one with the smaller wattage. It will not work.
The wattage means heat. It takes 15 watts to heat the warmer up enough to melt your wax. Most waxes will melt at this point and be hot enough to throw the scent. Anything under 7 is for night lights. Warmer bulbs start at 15 and 60 is the biggest wattage I have ever seen.
I have not seen the ones at target, so I don't know about the wattage on the larger warmers. Your wax has a higher melt point than the 25 watts puts out. Try a 30 watt. You don't need a different warmer, just the right wattage for your wax. Make sure the bulb does not touch the tray. Keep an eye on it. The size and shape of the bulb does not matter, it is all about wattage.
