The Canna Rats - continued

I just found this on another blog via Technorati and was posted some 37 days ago (keep up at the back there Inchbrakie!). Interesting to note that the earlier reported cost was a mere £250,000. I wonder what happened in the intervening time to double this? Maybe the scientists involved thought that 1.25 tonnes of poisoned bait per rat wasn't quite enough.....