What are these insects?

[thailand49]

Several times a year especially when it rains these come out by hundreds, thousands. At the wife restaurant build around undeveloped land they are all over the floor crawling everywhere. Several times I swept turn around and there they are again. I bug spray around restaurant building area slow them down.

 

Their outer skin seems hard I step on them and pop they die end of week the floor is stained with their markings I power wash the floors next day they come marching back.

What are they what is the solution?

[ColeBOzbourne]

Looks like a millipede. 

[degrub]

Chickens ?

[Sophon]

As previously mentioned it's a millipede, more specifically of the order Orthomorpha communis

[degrub]

Some discussion and advice from Alabama

https://www.aces.edu/blog/topics/lawn-garden/controlling-millipedes/

 

 

[thailand49]

5 hours ago, degrub said:

Some discussion and advice from Alabama

https://www.aces.edu/blog/topics/lawn-garden/controlling-millipedes/

 

 

That article was very helpful thanks.