Reba from Gastonia writes
What are visible signs (beside gnawing /mold) that it's time to replace the blocks with fresh ones
Initially you should check your BlueMax Mini Blocks Rodenticide baited boxes every week and re-bait as needed. There will be visible results that rodents are feeding on the bait such as gnaw marks or the blox is no longer whole/complete. After a few weeks you will better be able to gauge how often you will need to check the boxes and bait them. This will be based solely on how many rats are in the area. Large infestations may require you to reload the boxes every week or even a couple of times a week at first and eventually you can move to once every 2-4 weeks.
Answer last updated on: 01/21/2015