Do items de-stale your moves?

[KirbyFan20]

The items that you can turn on and off, I mean.

 

[FamilyTeam]

In what sense?
Your ability to throw items never gets stale, I think. Moves that give you items like Pacman's Neutral or Peach's do add to the Stale Moves queue but the item itself doesn't get stale.
But if you mean directly using them like smashing someone with a Lip's Stick or a Smash Bat, then that's a very good question, actually.

 

[KirbyFan20]

But if you mean directly using them like smashing someone with a Lip's Stick or a Smash Bat, then that's a very good question, actually.

Yeah, this is what I meant.

 

[FamilyTeam]

I found this:

Some classes of attacks are ignored by the stale moves system; they never enter the staleness queue, so they will always deal the same damage (and cannot be used to refresh other attacks).

• Grab airs prior to Smash 4, including the Hookshot, Clawshot and Grapple Beam.
• Grab releases, such as that of Donkey Kong's cargo throw.
• Taunts.
• Items in Smash 4.

In addition, certain hitboxes appear to be immune to the stale moves system due to being attached to an object, which is attached to another object, which is attached to a character. It is believed the "signal" to alter the damage of such hitboxes is not properly propogated along such object chains. An example of this behaviour is Zero Suit Samus's neutral air in Brawl.

Source.

 

[KirbyFan20]

Thank you very much.