Jeff from Joelton,tn writes
The active ingredient Chlorophacinone in Flatline Soft Bait Rodenticide can take several days and even up to 14 days to kill a rodent. For a fast kill or cleanout bait, we recommend a rodenticide using the active ingredient Bromethalin that is a single feed rodenticides with a kill time of 1 to 3 days.
Answer last updated on: 12/10/2021