Molly's Herbal wormer?

Has anyone used Molly's Herbal wormer? We had a chicken die this week out of the blue. All our other girls seem fine. The older girls (1 1/2 yrs) have rough looking feathers but I blamed the rooster. I've been watching their poo and I haven't seen any worms but today we had one liquidy white poo. I have been putting ACV in their water once a day. I ordered Molly's Herbal wormer tonight. I had read about some success with it on BYC. I would like to stay with natural remedies if I can. I have never wormed before we are only in our 2nd year of chicken keeping. I was also looking at Rooster Booster because I wouldn't have to throw out the eggs. Any thoughts?
Also should I worm our rabbits? They are occasionally in a run but mostly in their hutches.
Thanks for any input!

I used it. Wasn't very effective at all. Using oral and external diatomaceous earth and once a year ivermectin solved all chicky problems.

Honestly can't say about what works for rabbits.

I kept rabbits many years ago, in hanging wire cages off the ground. I never wormed them. I don't worm my chickens either. I did read on BYC that pumpkin seeds are natural wormers for chickens, so always get them a pumpkin or two in the fall. I also give them cantaloupe seeds, nothing was said about the cantaloupe, but they like it and it can't hurt.

Good idea on the pumpkin seeds! I'll try that one this year.