Nowadays, there are no Pied Piper of Hamelin around to trap rats, and rats are a menace that has to be tackled. Therefore, a scientist has devised an ingenious method to trap rats as understood from a report in nzherald.co.nz dated 11th April, 2012.
He uses caged rats to trap the wild rats!!
He relies on the olfactory attraction of members of the same species – this attraction could be for mating or for inducting others into the fold or just a result of plain curiosity. It could prove to be a useful tool to trap the rats since it does not use food as bait.
It would be a boon to rat infested areas where food is available in abundance, hence, food as bait does not find many takers.
The trap has two compartments - one, in which the caged rat is kept as bait and the adjacent one in which the wild one enters.
During field experiments, the researcher has met with considerable success – using food as bait, he caught eight rats but, using the rat-trap, he caught more than 50.
The credit for devising this method goes to researcher Idan Shapira who is associated with the Natural Sciences of Albany, Auckland.