Do I have to use fresh scent ingredients?

No. I often grab the odds and ends (orange peels, herb stems, older spices). It’s a great way to use up scraps.

Will these pinecones create creosote?

Fully dried pinecones burn hot and fast, which is better for creosote than slow, smoky fires. Wax-dipped cones are the real risk if burned frequently.

How long will the scent last?

It’s subtle, but it lasts for months if stored somewhere dry.

Can I use cones from my yard that still have sap?

Yes, simmering loosens some of the pitch, and oven-drying finishes the job. You may get a little extra smoke, but nothing unusual if your chimney is maintained.