Droped items has been respawn

[Freybjörn]

When I drop some items and saying my follower get it, after some time/some days all items again respawn
Sorry, english is not my native lang.

[stcaFylnO]

This is a known exploit/bug. It is a way to dupe items, but they will continue to spawn at that location, even under the map in some cases. It will contribute to save files becoming bloated. Worst case, they never stop spamming new copies.

Recommendation: Trade items via dialogue instead.

[liosalpha]

or by putting stuff in a container and asking the folower to loot it.
(will be marked as stolen)

[Freybjörn]

Just sometimes you have soooo many items (in follower's inventory) and he can't get more (in start of game, when you havn't house and stack your items in some random container is dangeruos)
Anyway, thanks for information!

[liosalpha]

Not leaving items in the container. Just a second for you folower to collect it. then you can double check if its all out.

Also some places are save for storage. for free.
http://en.uesp.net/wiki/Category:Skyrim-Places-Safe

[stcaFylnO]

In game ways to find safe storage and transport excess loot:

Carry some cheap arrows, put one arrow in containers as you loot areas. In 10-30 days, if that one arrow is still in the chest, then it is safe. 10 days if area is not "cleared", 30 otherwise... unless I'm forgetting some other rule.

Kill something like a fox or bird, load it up with tons of loot, then pick it up on your cursor (hold, instead of click), then move at full speed with it. Unlimited storage, but save now and then incase the animal de-spawns... or, look on wiki to find out how to make corpses resist de-spawning. [edit: won't work if transitioning, like fast travel].

Make a Thrall or other type of undead follower, load them up, travel and even fast travel. Thralls will stay with you after transitions, but other types will turn into ash piles. But, if the ash pile is at your destination, who cares, the delivery was made.

[stcaFylnO]

A couple edits:

I forgot to mention, when checking if a container is safe for storage, the map can't be loaded for that 10/30 day period.

Duped items in Skyrim are dangerous. I've even tried duplicating them via console from one container to another and found that at times, they cause CTD issues. In one test, I found a potion that was unstable, possibly due to sharing a RefID between more than one copy?

Some corpses and items never despawn and can be very useful tools; some will never despawn under specific circumstances. The wiki has lists of these.

Some animal corpses that are not listed online will never despawn. I've used one of these for a week in real world time... carried it all over Skyrim, as long as never transitioning while carrying it. One main culprit are some of the birds along Skyrim's northern regions (Volkihar and shipwreck).

Over stuffing a full follower is a bad idea, contributes to items vanishing from their inventory. Never give followers irreplacable items, since this may happen even if not over loading them.

I found my old notes from 2011/2012 regarding your duped item issue. I had a way to "clean-up" or fix it. See subsequent post(s)...

[stcaFylnO]

Fix/Workaround:

Description: Stop respawning items to prevent save bloat and possible corruption.

Snippet from complete 2011/2012 notes, see next post for full details.

Before starting [to dupe] a new group of items, clear the old set, or… JANE STOP THIS CRAZY THING!
Have the player character pick up the most recent spawned set.
save game
Load game
Look for items on ground. If not all gone, do it until clear.
Note that some items may fall through the ground.
Some of these may appear at later dates in the game.
Some may appear while making thise new save/load cycles.
When finished, clear the item respawns so they don't interfere with other items spawning on map at a later date.

If items fall through the ground, they may perma-spawn under your map and cause bloated save files. Luckily, since we are now on PC, the console can be used to deactivate collision detection, go under the map and clean them up too. On Xbox 360, it required glitching through the textures, say at Whiterun, then running across the sub-map, then finding and cleaning up piles of garbage.

[stcaFylnO]

Here's the rest of my old notes. So, basically, never do this :D

Not only can this cause issues with save files, but it can interfere with intended spawns, and even cause CTD.

XBOX 360 ITEM DUPLICATING:
I found this because I was revisiting map cells and finding tons of garbage I though my follwer had picked up.

Have a follower with available inventory space.
SAVE INCASE ITEMS VANISH: Revert to this save if needed.
Drop items on the ground.
Too many may cause some to vanish. I find a good limit to be ~20.
Have follower pick them up.
Save game
Load game
Check if items are in follower inventory, notice items are also duplicated on ground.
Beware, sometimes items may vanish, if so, load a previous save to dupliation event.
Have follower pick up copies
Save
Load
Wash, rinse, repeat.

If dropping mixed item types, the game decides which get duplicated and/or which vanish.

Dropping all of one item: Same vanishing issues, but usually enough remain to be worthwhile.

If this has been done already, see post #7 for the fix.

[KrayZ RoarC]

when i drop an item on the ground for my fallower to pick up, and then i leave the area like, through a door to skyrim for exemple... all the items go back to where i droped them this is happening all the time i don't know what to do i'm losing all the loots