External sealant

[Longshanks]

Hi

We’ve had problems with sluggies entering the conservatory, I’ll put pellets down outside, but noticed their method of entry is via gap between brick and step. (Original sealant has deteriorated)

Just wondered if there was a heavy duty one I could use?

Thanks

 

[^woody^]

Silicone

 

[Longshanks]

Ta