Formby30015 Lemon Oil Finish - 8oz

Can this lemon oil be used for dusting furnture that has a hared fniish such as a laqure?

How many in a package for $44?

how does this compare with "Guardsman" lemon oil? My cousin was in the wood working business many years ago and he always told me to use Formby's.

Can I use it on kitchen utensils like knife handles?