Intense surveillance: The actions required to responding to possible signs of stoats or mink.
If they have breached your prevention measures and barriers, you need to detect them as soon as possible and respond accordingly.
Follow the recipe (from Wildlife Management International Limited) and use the equipment list to make favoured wax blocks to use in your surveillance.
The mink raft is can be used for monitoring (and then trapping mink as and when required). It detects mink footprints in clay, and being a raft on water, this increases the likelihood of its use by mink.