That's up to you....if your flock is fine acting, performing well and healthy, you can choose to leave it alone or stage an intervention. The soap can work but go easy...a dab will do ya and anymore than a drop or two and the birds won't drink the water much.
I don't know how you keep your birds so I'm a little timid in making recommendations....all natural solutions won't sustain a flock unless other natural husbandry practices are in place, so I hesitate to recommend solutions of that type to people who may not cull naturally poor birds, can't provide healthy soils underfoot, and won't take other actions to insure they have a naturally healthy flock. Not saying you fit that description, as I do not know, but just a caution I try to take nowadays when I remember.
I'll tell you why this is so important...because I see many posts on this forum and others about other specie of livestock where people are keeping all their animals~no matter what~ and won't cull for those with strong immune systems and natural vigor and health, but still want herbs and other home remedies to right the wrongs in their animal's health and it rarely, if ever, works. Then they get disillusioned with an all natural approach and condemn it as "not worth it" or claim that it didn't work with their animals and so they discourage others from even trying it.
It works beautifully if animal husbandry is approached in a holistic manner and all areas of the habitat, feed and husbandry are also considered and geared towards natural health and living.
I had this question on a couple other posts of yours when you talk about culling but ALWAYS would forget to ask it. When you speak of culling, now do you eat those birds OR do you dispose of them somehow? I'd like to know what you find except-able to eat when it comes to the birds? Say one just doesn't look right to you and it stays looking like that, do you cull and eat it? I wouldn't know which ones I would feel would be safe to eat or which ones to dispose of. NEED some info on this to since one DAY I do plan on being able to eat my birds! Hubby is taking my cockerels to sell on Sat. So I can really work with the ones I am going to keep now is the only positive I can find in the situation. ONE DAY I WILL be eating and slattering sp? my own cockerels to eat! I WILL I WILL!Just a damp rag and a gentle swipe on the smudges only. Then train your birds to the nests and keep a deep litter in the coop and run so that they aren't tracking mud from their feet into the nests. That eliminates the problem before it starts and you'll still occasionally get a smudged egg but it won't look like it's been rolled around in poop. Those that I get that are too poopy, I just feed to the dog. He loves them! But, mostly, I never get dirty eggs..the occasional smudge now and again.
Excellent solution! That's everyone's first thing when they hear of someone's flock having pale combs...give them a worm medicine! I'll tell you true, at different times in a chicken's life they are going to have more pale combs than they usually wear...this is indicative also of lower hormone levels during times of molt or during the winter slow down, etc. This does not mean they are anemic, necessarily, but not as fertile. Look at young pullets and note that their little combs and wattles are pale at first~NOT meaning they need wormed!~but redden up as they grow sexually mature and the hormones are reaching a peak. Hormones fluctuate throughout the year according to the bird's age, the season, etc.
I've never taken a poop sample of any of my animals to the vet, though if it gives someone more confidence there is nothing wrong with it, but it's not a necessary function nor is it unwise to not take samples to the vet..it's a husbandry preference and according to your goals for your flock or your husbandry methods, it will determine whether you consult a vet.
I'll tell another truism...you will never completely rid your flock of worms and the goal should not be to do so. Every animal has their parasite~even us~and unless they overgrow into infestation levels, one never really knows it. Acceptable loads is the goal and animals healthy enough to carry acceptable loads of parasites and still function normally will live longer and perform better than animals that keep getting over growths of internal parasites that need medicines all the time to help them live and get rid of the worms.
Nothing wrong in throwing a spring tonic or pumpkin seeds down their gullet once a year or so, but to put them on a schedule and check their stool for any evidence of oocysts is kind of defeating the purpose of having backyard animals, IMO, as we want to eat healthy foods...what is so healthy about sick animals that cannot live without medicinal help? Unless one is eating their small bowel after processing, it's not likely the worms they carry will ever effect us at all.
Biologists say that 90% of the herd or flock's parasites are carried by only 5% of the animals...and culling for thrift, health and performance can eliminate that 5% to a good degree. How are we going to know what animals are in the 5% if we keep chucking meds down their throats so they can live well and perform well? That's the same problem big ag has today is crutching up sick animals so they can produce, whereas in the olden days those sick animals were eliminated and that left the naturally strong and healthy animals for our foods.