Prevention of worms in fixed run

I read this on the Flytes of Fancy website with interest:

Prevention is better than cure
Some simple preventative measures can help save a great deal or worry and loss of birds.

If in a fixed Run then move it regularly to new ground, or if you are not able to move the run then consider a surface that can be cleaned with disinfectant (not concrete please, not a natural surface at all). Using a loose hardwood woodchip surface for example and then make a watering can mix of Virkon disinfectant, or
Bi-OO-Cyst Coccidial disinfectant, to regularly (fortnightly) water the ground is a good solution. When dry, follow up with Net-Tex Ground Sanitising Powder.

Has anyone tried the disinfectant / sanitising powder as a preventative measure? As part of normal worming routine obviously. Do you have to remove the birds first or is it safe to use whilst they're around?

It sounds like a lot of extra expense and extra work when you can just treat regularly and be more confident that your hens will be free of worms.  As Lewjam says they will eat wild bird muck and be at risk or even eating earth worms can infect them. 

Prevention is still better than cure. Over use of wormers is a great problem in the livestock world as the worms become immune to them. As far as i am aware there are only 2 wormers for chooks and if these become ineffective ........... .

I tend to worm my hens 3 times year, I don't think it really matters when as long as it is done regularly. Inbetween I keep an eye on their droppings for signs of worms and worm again if I spot any.

Hope this helps

What's the best way of checking droppings for worms? Are they easy to spot?

Unfortunately my browser won't let me see the pics - they are just blank white squares.

Would it be poss for anyone to email them to me if I PM them my email address?

Thanks 

If you are seeing worms in dropings then you have a big problem.

In a fixed run, you need to worm more frequently, use flubenvet every three months.  It is safe to use, and there is no egg withdrawal.

In a fixed run, your husbandry needs to be very good too; poo pick every day, and turn over, or replace the run flooring at regular intervals.

To prevent the ground from becoming "sick" you can use a dry disinfectant like Stalosan F