I keep a gallon of worm oil on hand & squirt some in a small bottle that i use to lubricate my injectors & when done i squirt it back into the bottle. I also use it to squirt a small amount in the bags of baits & it works great I've saw some say that mineral oil caused their baits to get hard & i have heard of guys getting glycerin oil at a pharmacy saying it was a good cheap alternative. I've han my gallon of worm oil for over 5 years & still have over half of it left so in my mind it's pretty cheap in the long run. I make a lot of baits & am still surprised how little it takes to lubricate them.