How to use itemfinder properly?

[sokita_sylllyan]

I am trying to figure how this (itemfinder) works. So, I going to rocket hideout, to little room near the place that I battled with my rival. I am trying to use it, it give beeps, informed there is item buried somewhere. Then I am trying to check tile by tile, I got nothing. Check using itemfinder again, it beeps again. So, how itemfinder works and how to use it?

 

[Fanta]

I am trying to figure how this (itemfinder) works. So, I going to rocket hideout, to little room near the place that I battled with my rival. I am trying to use it, it give beeps, informed there is item buried somewhere. Then I am trying to check tile by tile, I got nothing. Check using itemfinder again, it beeps again. So, how itemfinder works and how to use it?

when you use it, hidden items appear for the duration of the peep (or less I think) you have to use the item finder and look at the floor constantly (sometimes it can be hidden inside objects and the item finder can't help you with that.)