We have manufactured 11 bait stations using 100mm drain flow left over from the house build. I cut 500mm sections then used a hole saw to cut a 80mm hole near the centre. A further 11 100mm lengths were cut and about 1/4 cut from the side to make lids that clip easily over the centre hole.
We have placed 6 bait stations on the other side of the stream spaced out between the container thru to the quarry, the remaining 5 are spaced evenly along the south boundary.
Bait station with the lid removed before adding more bait.
Bait station nestled in the bush.
We went through $65 of rat bait in the first week, since then we have started using possum bait which has the same active ingredient but is 1/3 the cost. The rats didn't seem to mind the difference.
Three weeks on, the consumption of bait is starting to reduce so we must be having an impact on the rat population. We will need to keep up poisening the rats because all we are creating is a small vacuum in the rat population which will continue to be replenished by the surrounding rat populations.