Insect and Spider Identification: Please help identify these dark brown bugs 2-3mm, 3 by Naomibugslife

Naomibugslife wrote:
We have been invaded by these small (2-3mm) dark brown only crawling insects in our home.
They can crawl up walls, on ceilings, carpets and because of this are getting everywhere, inside drawers, top of all furniture surfaces and it's now like everywhere I look I seem spot one!
I can't search these forums as there are too many spider pictures which I can't look at as have big phobia.
So need your help please to help me understand why we have so many of these bugs and how get rid of them.
I noticed about 10 of them in our bedroom before we went on holiday and I hovered them up before we went away. We've come back after two weeks and they have had fun multiplying everywhere!
I find them now in every room of the house!
They don't seem live long, curl up and die of own accord within less than week from what I can tell.
I wonder if my partner brought them into house from cutting lawn before we went on holiday, are they usefully something you would see outside? No one I know has ever seen them before so I'm a bit in limbo.
Please help me identify them if you know what they are. Thanks so much, Naomi