Slugs entering home from under floor (?)

FreshlyCutFlowers

Thanks for the reassuring messages. I can see activity on my paving outside the airbrick most mornings so will close it up with a mesh and see what happens.

subjecttocontract

Slug pellets are effective.

the_lunatic_is_in_my_head

subjecttocontract said:

Slug pellets are effective.

Slugs and snails are an important part of our environment, they feed a lot of animals, are pollinators and "recycle" a lot of natural debris. 

As icky as we might find them it's not really an excuse to kill them, a bit of mesh over the vent should do the trick for the OP and attracting more wildlife to your garden that eat them for food will help balance their numbers.

If you have slug pellets that have been sitting around in your shed for a few years any containing metaldehyde can no longer be used as it was banned last year and they should be taken your local council waste centre. 

https://www.gov.uk/government/news/outdoor-use-of-metaldehyde-to-be-banned-to-protect-wildlife

jaks111

I found a small slug this morning coming through a gap near the patio 
I googled it and put salt down next step I will buy slug pellets 

 I have no pets to harm  
they may not bother some people but personally I don’t like them 

km1500

don't kill them just pick them up and put them elsewhere for example at the bottom of the garden they are doing no harm - well unless you are growing lettuice of course in which case I can understand your anger! 

the_lunatic_is_in_my_head

jaks111 said:

I found a small slug this morning coming through a gap near the patio 
I googled it and put salt down next step I will buy slug pellets 

 I have no pets to harm  
they may not bother some people but personally I don’t like them 

If you must dispose of them, they are partial to a drink, a bit of beer in a pot sunk in the ground should attract them and I presume they drown. Doesn't sound great for the slug but probably better than a lingering death by dehydration caused by the salt   

MouldyOldDough

Nematodes work best of all for slugs 

https://www.simplyseed.co.uk/pest-control-nematodes/nemaslug-slug-killer-nematodes.html

Mistral001

As you have guessed, there could be damp in the space under the floorboards.  The dampness can be as a result of something simple such as a small leak from a radiator valve.  Such a leak can easily go unnoticed for years, but eventually will cause problems.  Also check for more obvious thing such as leaky gutters and downpipes and also that the ground around the building has not been raised recently so that it is coming close to the damp proof course.  This last one is quite common now as patios and landscaping makeovers become more popular.

bob2302

Postik said:

Hmmm strange actually because I've never once in my life had a slug inside the house, but after replying to this thread, this afternoon I went downstairs and found a small slug next to the front door inside.  I have a solid concrete floor and a composite door that seals closed (no gaps).  There's no way the door has been open long enough today for the slug to quickly crawl in.  The only explanation is that someone posted it through the letterbox.

I have a concrete floor too. I get slugs of all sizes in my kitchen, which has an old wooden door, but I also occasionally get small ones around my modern double-glazed front door and sliding patio door. I think they are able to squeeze through very small gaps, and exert enough force to push aside draft-excluder strips. When you consider that mice can squeeze through holes close to the width of a pencil, it's not a huge stretch that much smaller invertebrates can do much better.

Mistral001

Since the OP mentioned airbricks, I assumed that the floor in question was a suspended timber floor with a void underneath.  The OP mentions that the kichen floor is a concrete floor. Is the floor where the slugs are, a solid floor as well?