hey guys i had rats attack my new punto here are some tips i shall share..which may or may not work in your case.
1) I have tried tobacco pouches...though some sware by it...it didnt at all work for me...infact one day i found the tobacco pouch all torn up by the rat.
2) Never try to kill the rat using mortien rat kill or other such vitamin K inhibitors...they take time to work (3-4 days) and the rats can cause quite some damage by then. Also, since rats assume that its food...they spread the word and u will only have to deal with more rats!
3) I had the same problem with traps...i caught 16 mice in a row.....one day after the other....it was like an endless supply of rats...id set the trap at night and by morning id be greeted by a rat...(no not the same rat....i used to leave them very far away....which by the way again is troublesome)
4) If u can find some one who can rat proof your car then great...its the best way! i couldnt!
5)Finally some one suggested i go to a plant nursery and ask for a phorate 10% C.G based insectiside. it was cheap cost me around 60 bucks a packet or something.....now heres the tricky part....this shit smells crazy...its like a 1000 eggs rotting...uve got to fill around a handfull of these pellets into a cloth and tie the cloth inside ur engine bay. Always use gloves when handling poisons. wash hands thoroughly after handling. If u dont want ur house to smell like a shit hole...i suggest u open and transfer some of the contents into the cloth ur going to use...outside the house...store the remaining insecticide in multiple layers of polythene bags. Ive never had rats ever since...but now i have to take the trouble of removing these cloth balls every time i want to take the car our...and i have to put them back every night so that the rats dont come...i store the balls in two layers of plastic inside the boot...but it worked for me...and now no more damaged wires.