I see now. So, is it okay to advocate for an all natural approach even for those in confined spaces, such as preventative measures instead of curative? We also have many keeping birds in small areas over here in the US but, as a nurse and understanding the overuse of meds and what it has done to our food supply and our general health, I never suggest that people medicate without exploring all other options first. There are a few good solutions that can keep even small flocks in small areas less likely to develop a parasite infestation or disease.
What we see here is that repeated use of the same med for livestock, as in scheduled dewormers~and for people, as in preventative antibiotic use~often breeds a resistant parasite or germ, resulting in the need to switch to a different or stronger med and then the vicious cycle continues. Pretty soon we've developed very strong worms and germs but not strong animals or humans, so some people are actively promoting a more natural approach to disease and parasite control that will work out better for all concerned over the long run.
I'm kind of surprised, with all the rules they have about feed in this country, that this dosing of backyard flocks on a regular basis has not been addressed in their long term solution to improve the safety of the food supply.
Over in this country they are starting to crack down on it by making these OTC drugs found in feed stores unavailable for purchase unless one has a prescription from a vet and usually that vet will want to do a fecal study or see the animal before prescribing a dewormer or antibiotic. There's a lot of folks unhappy about that, as you can probably understand, but it does spur people on to explore other options for keeping a healthy flock...and there are options if one wants to take the time and effort to find them and implement them.