3.  Caulk and clear the gutters.

Get up on your ladder on a day when it's not raining and clear out all of the debris from the gutters. This will allow water to freely flow. While you are there, re-caulk the end caps on the gutters.  The ends of seamless gutters have caps on them that are caulked and crimped.  Old caulk may allow drain water leaks to drip down on the siding of your house.

To get started, dry the clean gutter out.  The aluminum needs to be dry in order for the caulk to bond well to the surface.  Butyl caulks that are designed for outdoor conditions should be used.  Alternatively, you can ask for advice at your local home improvement store on what is the best product to use.  The color of the caulk doesn't matter because it is the inside of the gutter that you will be caulking.  Squeeze a generous amount of caulk out.  Smear it around using your finger inside the gutter cap's seams.  Nobody is going to see your work, so you don't need to worry about how it looks.

4.  Patch up nail holes as needed and repaint.

Inside the house, patch up any nails holes that are in the walls.  Get lightweight putty at the hardware store.  Use a putty knife to apply it, filling each hole and then scraping any excess putty off of the wall.  Follow the package directions and then wait for the putty to dry.  Next, sand the putty down until it is flush to the wall and smooth.  Use primer to paint any repaired spots.  For anything larger than a nail hole, call a handyman.  Blending larger repairs in a wall are not as easy to do.  Obvious patches can send the message that you are trying to hide things.  Repaint the whole wall.  Otherwise, you probably won't be able to cover up the touched-up patch.

5.  Get rid of any cats and smokers.

Okay just kidding, kind of. Smells really can be a deal killer.  Whenever strangers come into your house, one of the first things they're going to notice are smells.  Do not attempt to hide bad smells behind plug-in room fresheners, potpourri or scented candles.  Potential buyers are already suspicious about potential problems, and if they get a whiff of one of these they will think you are trying to hide something.

Deep clean using bleach in the bathrooms and kitchen.  Then re-caulk cracks and re-grout tiles between floors, counters, toilets, tubs and sinks to seal the moisture out that can encourage the growth of bacteria, mildew and smelly mold.

You have some extra work that needs to be done if smokers have been living in the home.  To get rid of nicotine film and smoke from the walls, some experts recommend washing the walls using a cleaner that has an alkaline builder, like ammonia, along with a glycol solvent (you can find this at a paint store).  Use Kilz primer for painting an undercoat onto a dry, clean wall.  This will seal nicotine smells in.  Complete the job by applying a fresh coat of paint.  To further freshen your home's air, change your furnace filter.

Send smokers away. Okay just kidding.  You should, however, ban smoking in the house as well as the garden  The smell can cling to clothing, decks and porches.  When a garden is littered in cigarette butts, it can lose its appeal.  Board your cat away from the premises if possible while showing your house.  Clean your litter box every day at a minimum.