Red and yellow insect found in kitchen in Conrad, Montana (USA)

This appears to be a stink bug in the superfamily Pentatomoidea of the true bugs (i.e., order Hemiptera).

Specifically, your specimen appears to be Perillus bioculatus or the two-spotted stink bug.

^{Photo Credit: Margarethe brummermann (2008)}

You can see additional photos including those demonstrating the species's various yellow vs red color morphs here.

According to the Integrated Plant Protection Center at Oregon State University [my emphasis and links]:

Mature nymphs of the two spotted stink bug are about 8 to 9 mm long. Adults range in length from 10 to 12 mm. Nymphs may [be] pale yellow or reddishorange with a distinct black "Y-shaped" marking on the pronotum and two black spots on the thorax.

According to Wikipedia, this species is usually a beneficial predator (especially of the Colorado potato beetle), but early nymph stages feed by sucking on potato stems. The trade-off, I would guess, is worth it.

• In fact, the color variation in this species (namely the shift from white/yellow to red) that my earlier link shows photos of is a result of a higher diet of potato beetles. [Source, taken from p 99 in McPherson's 1992 book The Pentatomoidea (Hemiptera) of Northeastern North America].

^{Source: bugguide.net}

Their range, according to bugguide.net is southern Canada, the U.S. and into Mexico.