I have been told to worm my Chickens every 4 months with Wazen. OK! I mix one Tablespoon in their Gallon Drinker and leave it for a couple of days and then rinse the drinker and call it done. I only have a couple of chickens...... Questions - Is this strictly necessary? I have seen no evidence of worms and didn't worm them at all for the first year I had them. I've wormed them a total of 4 times now - over this last year - they are "due" again in May. How long should I wait to eat the eggs? I've read I can never eat the eggs again - Mind you I've been eating the eggs the whole time - never had any issues. I certainly don't have worms..... Thoughts? Thank you!