How do slugs keep getting into a sealed space?

[d000hg]

We have a pantry on the end of our kitchen. Solid brick walls, plastered, on a concrete floor. No ventilation bricks, one sealed window with no cracks or gaps. Etc. Not adjoining an external door.

It's damp and a bit gross so if see why slugs like it but not how they get in. They can't burrow through brick so what is the likely answer? They crawl through half the house to get in, there's a gap in a wall I can't see, or something else?

 

[mattylad]

There is a small gap you cannot see. it may not be where your looking, they tend to travel far.

 

[JBR]

Our slug visitors come in via the cats!

 

[big-all]

slugs can get through a 2mm gap and you wont see them till they grow at which point they cant escape
clean the floor use a trail off salt 1mm x1mm and divide the room into several squares say 2ft/600mm then by elimination you can find the source

 

[d000hg]

Would a solid brick wall be expected to have ANY gaps?

Perhaps the top of the wall under the eaves if not.

I don't see any results coming into the room from the kitchen so I think they must be coming in directly.

Gross

 

[big-all]

they tend to be near the ground and in the shade and damp but have seen trails going up to the eaves on my mid terrace so top off the roof 30ft up
movement over an arid dry surface will be very very unusual as they use slime to cover the ground so fairly wet will be easy arid will be very very hard and resource and energy hungry and probably very uncomfortable

 

[Mottie]

slugs can get through a 2mm gap

I used to go night fishing. Once, we bought a glass bottle of milk with a foil cap to make tea throughout the night. We pierced two tiny holes in it and had plenty of tea all night. In the morning when we were packing up, I was emptying the bottle through the holes and a load of slime was hanging out the holes. Anyway, I noticed the biggest fattest dead slug in the bottle - fatter than my thumb and it made me heave! Without removing the cap, I rinsed the bottle out and was ready to take it back to Sainsbury's and make a complaint but then we noticed the slug was alive and moving! We can only assume that it slid through one of the holes in the night and we'd been drinking the milk in our tea. Luckily, I didn’t do my usual and swig the milk when we were packing up. Gross.