Caster level checks for non-casters?

[Arthur G]

Can non-casters make caster level checks? Specifically, can they do so with effects provided by magical items?

Hypothetical situation: Tim the Fighter is wearing a pair of Boots of Teleportation. He wants to make a nice bowl of cereal to enjoy on what happens to be a nice summer morning. But what's this? Out of the cereal box, ripping right through Cap'n Crunch's glorious mustache, comes Black Magga, legendary lake monster of the Storval Deep! She too looks hungry for breakfast... and she's eying our poor Fighter! Tim had better get out of here! He clicks his heels together three times, activating the magic of his snazzy footwear. But oh no! Magga remembered to bring her supernatural ability Warp Dimensions. This makes it so that anyone trying to use a teleportation effect near her has to succeed a DC 21 caster level check or have said effect fail. What ever will our hero do?

Yeah, that's what I wanna know.
Non-casters can of course use magic items, but can they do caster level checks with such items? If so, would they use the caster level of the item? And what if Tim happened to have one level of Wizard from that one evening class he used to take? Would he then use his own caster level for the check or the superior caster level of the boots themselves?

Thanks in advance for any and all help, guys.

[Nefreet]

I'd imagine you'd use the CL of the item, but I'll admit I've never actually seen this particular corner case example come up in play.

[Ziere Tole]

You use the CL of the item. Even if you were a 20th level caster, you would still have to use the item's CL. This goes for wands, scrolls, wondrous items, rings, and probably a few other things I'm forgetting. Staves are an exception in that you can use your own CL if it is higher than the CL of the staff. There are also some feats/class abilities that allow you to use your own CL for wands and/or scrolls, although I don't know of any that apply to other magic items as well.

For proof of RAW (there are a few other lines scattered about but this is the quickest one I found):

Using Staves, CRB p.491 wrote:

Unlike with other sorts of magic items, the wielder can use his caster level when activating the power of the staff if it’s higher than the caster level of the staff.

[RumpinRufus]

Any character, whether they can cast spells or not, uses the items CL when making caster level checks regarding the item.

The 5th-level wizard using a CL1 wand of magic missile against someone with SR rolls 1d20+1 (not +5) to beat spell resistance. The rogue using UMD on the same wand also rolls 1d20+1.

So Tim would be rolling 1d20+9 to use the Boots of Teleportation.

[Majuba]

All I have to say is Tim needs to sue his Cap'n Crunch supplier.

[Arthur G]

Much appreciation for the help, people. I remain grateful to the supportive souls of this forum. You guys rock.

Oh, and I guess that means Tim lived to see another day. Currently he is on a quest on the third layer of hell to find himself a lawyer.