If you use moth balls, put them in a dish. I did this in my trailer and in the spring when you remove the container of moth balls, the smell isn't stuck in the upholstery.

If the place is going to be semi-heated make sure the car is clean, especially the underside. Warm is worst than -20 for corrosion. Most underground garages are very damp.
Have the tires parked on strips of plywood or such, don't leave the tires sitting on the cement floor.
Yes, to fuel stabilizer. No, to moth balls - find something else as has been suggested.
Is there someplace else to store the battery that is drier and warmer?

To keep the mice away, I recommend scattering fabric softener sheets around in the interior and trunk.  It's worked great for the cars I've had in storage, and smells MUCH better than mothballs.  They're only good for about a year, but it's cheap insurance.

Here is a list of other things you can do with fabric softener sheets.  Whether they work or not is another story, but fun facts nonetheless.

norontcan wrote:

---

Is there someplace else to store the battery that is drier and warmer?

---

 Actually, batteries perfer colder temperatures better rather than warmer ones, providing they are fully charged and one cable is disconnected!

 When I did my GM A.S.E.P training back in the late '80's early '90's, the instructor out right told us to have the battery fully charged and toss it in the deep freeze next to your moose meat!!! 

 

-- Edited by 67Poncho on Friday 15th of October 2010 12:42:44 PM

---

 Actually, batteries perfer colder temperatures better rather than warmer ones, providing they are fully charged and one cable is disconnected!

 When I did my GM A.S.E.P training back in the late '80's early '90's, the instructor out right told us to have the battery fully charged and toss it in the deep freeze next to your moose meat!!! 

 

-- Edited by 67Poncho on Friday 15th of October 2010 12:42:44 PM

---

Agreed, my battery success rate is far higher since I started leaving them cold and charged.

 

You don't park em in Arizona, you drive em!

For the mice I used a contraption involving a 2X4 suspended over a 5 gallon pail, from the 2x4 I hung a string with a peanut butter ball on the end. The idea is that the mice are attracted to the sweet smell, try to climb down the string and fall in to the pail. They can't jump out and can't grab the string. No more mice! Empty pial once a month or as the pail fills. I used moth balls once in my 74 chev 1/2 ton factory custom sport truck (another project) and the mice made a circle around the balls by mere inches (by their markings left behind) and filled my heaters full.

As far as the batteries, cold is best but must be fully charged or it will freeze. My bike battery is too small and it comes in but the car is no problem. I do use a small batery tender every once in a while to maintain full charge.

For fuel, more in one place the better. Top the tank, stabilzer doesn't hurt, but I don't use it. Some say shut off the fuel (easier on a bike to do) run the car until it dies draining the carb, don't do it, it dries the seals. I park my bike in the fall prime it in the spring, fire it up warm it up and change oil and I'm good for another year. The fall oil change will only sit in the pan and will not break down over the winter months. No farmer changes the oil in their combine or swather every four months and they work fine.