What will happen with items I put into someone's inventory during Pickpocket?

The skill called Pickpocket allows taking things from unaware people, but also allows put something to someone's inventory. I want to get rid of trash (spoiled food, old equipment). So I came with some questions about that.

Is there a limit things I can put into someone's inventory during Pickpocket attempt? And another question - what will happen later with items I put into someone inventory? Will these items be wiped out or maybe carried by this person all the time?