SCAM
If you watch a few YouTube videos on pellets, you'll find out that they are one of the biggest scams on the market.
So many use cheap filler woods, oils for flavoring (which burn off in the first 30 minutes of cooking), or worse. Examples:
Traeger - their mesquite pellets were 100% alder or oak, with mesquite oil added to them. Same with hickory. Other pellets had less than 1/3 the wood on the package. Traeger paid $1.5 million in a class action lawsuit.
Pit Boss - 75% cheap filler wood on their varieties.
Most all discount pellets sold at Walmart, Home Depot, etc.
Lumber Jack - 100% of the wood stated on the label. However they sold out to Lignetics, so quality may go down.
Cookin Pellets - No oak or alder, no additives, no fillers.
Jersey Devil - Proprietary blend of cherry, maple and hickory. No fillers, chemicals, oils, binders.
I use Cookin Pellets and Jersey Devil. No complaints.