Alternate timeline
(covers information from an alternate timeline)
(covers information from an alternate timeline)
A bacillus spray was a type of bacillus that targeted and killed the larva of certain harmful insects, delivered in a vapor form.
In an unknown, alternate future timeframe, Geordi La Forge recommended a bacillus spray to combat the leaf miners on Jean-Luc Picard's grapevines. (TNG: "All Good Things...")