How long after setting a trap will I capture a rat or mouse?

Each rodent is different. Mice are very curious and easily adapt to new objects and surroundings, whereas rats are the opposite. A mouse is more likely to be caught in the first 2-3 days, while a rat may take up to week or longer.

Once one or two rats have been caught, other rats are usually aware of this and are likely to leave the dwelling, realising it isn't a safe haven for them.

Where is the best spot to place to mouse trap?

Mice have very poor eye-sight and rely heavily on their whiskers to guide them. This is why you'll normally see mice running along the side of walls. Placing 2 traps, 4-5meters apart along a wall will maximise the chance of catching the mouse.

If I see a rat near our house, how far away would its nest likely be?

Rats will travel up to 50 metres for food, but further during harvest times (near farms). Rats are dependent on water and will usually nest near a water supply. To survive, they need to have at least 30mLs of water every day. Reducing water sources around your home will reduce the chance of rat infestations.

There are some teeth marks on some timber outside our house. How do I know if it's a mouse or a rat?

It is most likely a Rat. Rat's incisor teeth (front teeth) can grow 10cm in 1-year if they don't chew on them. They will chew on wood, aluminium siding, wallboard, plaster, panelling, frozen ground and concrete to keep their teeth short. They will not chew on glass or most metals.