They seem to have made an enterance near the shed door and have tunnelled underneath. I have no idea on how many there are, but sounds like lots! They have managed to get inside the shed too, they can crawl through the floor.
I want to start using the shed more so they need to go. Can you get insect killer spray that'll kill them? And how do I make sure I've got them all? How do I get to the nest, do I have to rip the floor up of the shed??
Any help appreciated!!!!