It is very important to keep wires safe. Wires uncared and pilled can cause short of circuits, which may lead your house on fire. To keep wires safe you might need; insulation tape, plastic lining, nails, hooks, screwdriver, and hammer.
First of all find all the wires in the house which are damaged or frayed. Cover any pilled wires with insulation tape or if possible try to change it. Tie all the wires together with help of insulation tape, do not cover it fully use little tape enough to align the wires. Then fix one part of plastic wire lining on the wall. Place the aligned wires in the space of lining and cover it with the other part. You must not fix the two parts of lining permanently. Do not place fire objects, like candles matchstick etc near wires.