What's this black, white and orange beetle?
Yes this is an adult carpet beetle. 

Specifically,  this is a Common carpet beetle (Anthrenus scrophulariae)

  

See here for more info.  


2.5 to 3.8 mm in length. 
Black head (mostly hidden by the prothorax) + black  thorax and elytra with distinct scale patterns. 


The thorax is covered with white scales except for a large midline. 
The elytra have orange to red scales down the midline with variable patches of white scales. 


Note: in older individuals, some or all of the scales may be lost and the color pattern may look different.




This species is found worldwide.  

Unlike the larvae,  the adults are primarily pollen grazers.