for mice - yup, fly paper will do the job. around P12-14 per set of 2. sulit yun..u can trap more than 1 sa isang paper...oh what a lovely sight...hehehe!
for rats - itatakbo lang nila ang fly paper...u may try glue board. its like the size of short bond paper na hinati crosswise (glue board by thomas cowan yata ang brand). although it is a bit pricey (P95-100 per pc - size of bond paper ) but you'll have the satisfaction of seeing those vermins stuck firmly.
they are both available at your suking grocery (probably close to the insecticides and the like)
pahabol - torture method (xcuse lang medyo malupit): sindi lang ako kandila..tapos papatakan ko sila...hanggang maubos ang kandila ko!!!