Cleaning pebbles in run

My ground is heavy clay and I have put down pebbles in the girls run, which is fine it works, and I hose it down every couple of days at night time to allow as much time as possible for the water to sink into the ground.  I worry though that it's going sour underneath.  Can I wash it or water it with a Jeyes fluid dilute or something else to freshen it up a bit?  my girls do peck about in it though so it has to be safe for them -any ideas would be welcome, thanks

Unfortunately as it is heavy clay the water won't drain away(clay being impermeable), so all you are basically doing is adding more stuff to the soup going on underneath.
Can I suggest that you wash it down less and poo-pick a bit more (I't a sh***y job but someone's got to do it)
As to curing the problem I can't help, but the following might make it a bit better :
Remove the pebbles back down to the clay layer,
Drive some holes down as far as you can into the clay (a bit of steel reinforcing rod would be good) this will take the water away from the pebbles,
Then put a layer of gravel down,if you put Jeyes down underneath the gravel it will go into the holes and keep it away from the pebbles.
Then put the stones back down on top, that should help with the drainage a bit.
Hope this helps

If you can't get the water to 'sink' then the only way is to create a drain as suggested or create a slope in the clay soil underneath away from the run. Either way, you will need lots of water then to wash it clean. If the poo goes into the ground then bacteria will break it down; anaerobic at depth and aerobes near the surface so no nasty pongs arise. If you haven't any suitable soil under the gravel then washing the pooy stuff out, so it can sink elsewhere or be evaporated is the only answer - unless you want to build a septic tank.

I had gravel in my first ever run but found that the poo sticks and dries onto it and eventually all we had was stinking, heavy, disgusting mess

we then tried rubber mats..... even worse..... now I put shavings down but my run is dry so not really the same problem

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