In the early stages of the pre-baiting process, the termite scouts or foragers will find the bait stations and tag them with a pheromone which is a scent trail for the worker termites to follow. Next, the worker termites will follow the pheromone trail established by the scout termites and begin feeding.
Scroll to the bottom of the Info screen, then tap Block this Caller. When you block a phone number or contact, they can still leave a voicemail, but you won't get a notification. Messages won't be delivered. Also, the contact won't get a notification that the call or message was blocked. You can use some third-party apps to detect and block spam phone calls.
If a phone number is truly blocked, the caller will not be able to leave a voicemail but if you're hitting decline or using a reject call list on your phone, that does not block the number it just means you won't get a call.