I was cleaning my washroom today, and come to think of it I have seen one of these in my living room previously (crawling on my couch). These bugs are brown about the size of a grain of rice (but thinner), they look like they have 6 legs, and perhaps wings ( I have never seen them fly before). They are flat, and it looks like they have a shell, but they squish quite easily. Here’s the part that scared me, when I was cleaning the washroom, I sprayed some cleaner in the tub, got a drink and when I cam back, the bug was laying in the bottom of the tub, upon closer looking it had little claws or pinchers (kind of like a lobster). After doing some research I thought it was a pantry beetle, but I have never seen pictures of pantry beetles with pinchers.
I have attached a couple of pictures, hopefully they help.
Many thanks in advance,
You have killed a harmless Pseudoscorpion which belongs to the order Chelonethida or Pseudoscorpionida. They are also called Book Scorpions. They are small arachnids. They eat small insects hence are beneficial.