Leather Diffuser Oil

I currently have 3 diffuser oil setups from Demeter in different rooms in my house. The smell isn't overwhelming, though these are fairly large rooms. I had bought one in a different scent and was shocked how it worked better, and more consistently, than the various house smell-goods we've been buying forever. Our living room has very high ceilings, and we still noticed it regularly, but more, we noticed the lack of other smells clinging. The leather is my favorite, though it's exactly like the oils and sprays, so getting an oil rollerball or a mini purse spray if you're not sure about a scent before you commit to this would be helpful. We have 3 in the house, and we're going to buy more. By some miracle, we haven't spilled them yet, might need to get museum putty to keep it that way.