Supply Caching will be a valuable aid if your initial safe house is over run. They should be in conjunction with your B.O.B's. They will be to help you survive on the run or at a back up safe house. They will give you a start to rebuild or to wait out to retake your main supply storage. They can also be left for other survivors to find and help them get by, or contact you. What are your plans on caching? How and were do you plan on caching. There are many ways to cache supplies. The most important thing is to keep your supplies safe, dry, and accessible. You can dig holes and put sealed PVC pipe in them. You can also leave them in small packages in cars, under mail boxes, or behind dumpsters, basically use your imagination and ingenuity.
Please leave your plans and any help-full ideas bellow !!!!!!

In my plans I will put a number of caches in three direction. There will be 40+ in my group, including children, so I will have larger caches. I will put them into sheds, barns, and abandoned houses. I will mark several maps for the group with there locations along with directions.
Each cache will be in a plastic tubs taped shut and will contain:
240 MRE's and 120 Granola type bars asst. flavors
1000 rounds 5.56 x 45,
300 12 gauge rounds
300 rounds 9mm
300 rounds .45
4 flash lights, 2 extra sets of batteries
1 walkie talkie (with range to reach the main safe house), and 3 sets of batteries
1 first aid kit ( including: sutures, antibiotics, bandages, and etc. )
1 misc. kit ( matches, 4 rolls t.p., space blankets, 200' rope, and etc. )
I will pace them starting at 5 miles from our safe house, in 3 directions ( north, south, and west ). And then out to the second caches 20 miles and a third 40 miles out. (I know why not East: there are large city's that are hard to avoid to my east. Jackson, Ann Arbor,Flint, Detroit. and all of the suburbs.
I didn't add water to the boxes because water is abundant in Michigan (U.S.) with plenty of lakes, ponds, rivers, and streams.
This format I believe will work for me but I live in the country on a farm. I also have access to gas to drive and hide my caches after Z Day. I may as I hide my caches fortify the buildings so that if we need to stop for a while, or are being followed we can hold out. I decided on these items to go along with our B.O.B.'s!!!
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Another thing you can buy is a years supply of M.R.E.s (Meals Ready to Eat), if you could buy several of these and then cache them somewhere you should have no problem with food (or have several caches with one or two of these, you would have enough food for a looong time).
basic cache contents:
2 years worth M.R.E.s
3flare guns with 15 flares
3 L.E.D flashlights with 4 extra sets batteries each
16 rolls of T.P.
15 road flares
3 assorted rifles
Small amount of pistols (5?)
At least 10,000 rounds ammo
Cooking supplies (Stove, fuel, pots/pans)
water filter with two replacement filters
Some sort of shelter
Crop seeds and basic farm tools
Hammer and nails
Zombie Survival Guide
Lantern (extra fuel/batteries)
Well equipped first aid kit with a first aid booklet
5 machetes
Sharpening stone
Anything else that I come up with

one of my goals here is that if I die and someone finds my cache that they will be able to defend themselves and if the zeds are gone, start a life in one spot (or if someone come across this stuff and needs it they will be supplied).
-Thrawn5
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BigBDave: I have cached some supplies at my pack-up locations. They will consist of:20 Days of food, and water (MRE's and Emergency water pouches)First aid kit, Ammo. (500 Rd's. .223 and 500 Rd's. 9mm)30 gallons gas, small bottle (stable)Maps, and compass, and binoculars, Sleeping bag, Misc. ( matches, coat, cooking gear, flash light, batteries, and etc.)I will place them in my designated back-up safe houses. They are located @ 5, 20, and 100 miles from my home going North to the U.P. of Michigan or to Canada. I will also have my B.O.B. and a few other supplies I grab as I evacuate my main safe house. I will place them now and exchange out what I need to as I visit my Mom's (5), sister (20), and brother (100).
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byates - some ideals for a survival bucket cache, this is small enough that you could have several placed around, hidden(buried?) in out of the way spots for SHTF situations.
from:
http://www.alpharubicon.com/primitive/survbucketeto.htm
I have edited it somewhat.
A survival Bucket, was recovered (after nearly 11 years) in May 2001. Upon inspection of the recovered contents, I was thrilled beyond belief. Everything was in perfect order, just the way I had buried it, in August 1990. All foods were edible, and there was no damage due to condensation or rodents. Enclosed is an updated inventory list of what I call a 30-day bucket. This bucket enables one person to survive for at least 30 days and possibly longer depending on the knowledge of the individual in the art of survival in the wilderness. Enclosed is a brief statement on how a bucket is put together, where to get the necessary items, and how to make individual food packets. You can add or delete items, but this bucket is what makes up a basic 30-day bucket. If a family had several of these buckets per person, it would only take minutes for them to place these buckets and their individual packets in the family vehicle and be on their way. I have buried these buckets in strategic locations allowing me the flexibility to re-supply my pack should I have to leave on foot. If you know where you are going to relocate you can burry a number of these buckets with different items inside to fulfill your needs. If you cannot find buckets with rubber seals you can use a chafing compound, but the lid and or bucket will be damaged when you open it.
CONTENTS
Five gallon bucket with rubber seal lid can be found at bakery shops, restaurants and food corps.
1. MRE’s: you can purchase at surplus stores, sporting goods stores, catalogs. I only placed these three meals in this bucket because I have extra.
2. Individual food packets, HOME MADE, (long rice, barley, dried veggies at home with food dryer, corn, carrots, peas, green beans potatoes, etc, 1 teaspoon soup base and/or bullion cubes) sealed with Tilla vacuum sealer machine, usually 20 meals per bucket.
3. 50’-100’ of parachute cord, or small diameter rope.
4. Potassium Iodate, I like supporting Christian Media, PO Box 448, Jacksonville Oregon 97530.
5. Bic lighters, found on sale at local department stores. You can never have enough matches and or lighters to start fires.
6. More boxes of matches. I have waterproofed these with ladies fingernail polish (enamel).
7. Hand pumped flashlight, Russian made (they are the best). Can be purchased through major survival 435 west Alondra Blvd. Gardena Calif. 90248 (1800-441-8855)
8. Bullion cubes found at local department store, Tea bags were placed inside bottles give added wealth to the bucket.
9. One pound of bee pollen. Very good for energy and keeping human immune system high. Can be purchased two for one from Natures Distributor’s Inc. 16508 E. Laser drive, Bldg B, Fountain hills, AZ 85268 (1-800-624-7114). This company is very dedicated and honest and I can usually get 2Lbs for less that $14.00. Only bummer is that it is Chinese pollen
10. Master formula, only can be found at Christian Media, or you can go with Dr. Richard Schultz’s super food (1-800-herb-doc)
11. Energy bars. Can be found in health food stores, I bought these through major surplus.
12. Water purification tablets, can be found at surplus stores, in sporting goods stores, and catalogs. Water filters are nice but might be too expensive for each bucket.
13. Small pen light and rechargeable batteries
14. Survival tabs. Can be found in catalogs, and I think major surplus and Christian media still sell them.
15. Glow sticks are nice but not necessary. These are miniatures for map reading.
16. Toilet paper. Shrunk down in "seal a meal" bags with vacuum sealing machine.
17. 44-hour candle, one or two per bucket. Can be found in survival catalogs.
When you are ready to seal. Place a chunk of dry ice in the bottom of the bucket then place all you items in the bucket. Place lid on bucket but do not seal. Wait until the dry Ice is completely evaporated, it will force oxygen out because carbon dioxide is heavier than oxygen. Once you are sure the ice is evaporated, seal the bucket tightly and do not open until needed.
INDIVIDUAL MEAL
First you will need a vacuum seal-a-meal. There are two readily available models, Tilla and Foodsaver. These two have proven worthwhile and long lasting. The ingredients were found in the bulk section of a major food store chain. I have gone with grains and dried fruits because there are little or no saturated fats involved (which can spoil the food packet in long term storage). These meals have been proven to stand the test of time. You can use different ingredients, but keep in mind about fats and especially saturated fats as they do cause spoilage. Be sure to check out ingredients for this fact. When preparing these meals to be eaten, either hot or cold water can be used. You must allow 10-15 minute when hot. These meals weight is minimal, 40-50 in your ruck sack (pack) weighs approximately 3 lbs. These meals can also be eaten dry, however water must be consumed with the meal to activate the colon and aid in digestion. Other things that make meals are long rice; freeze dried meat, dried vegetables, and soup base. The amounts with vary with the people who make these meals.