Hi there, I have two questions. I have just dunked my chickens in a dilute of malaban 10ml to 1ltr of water, according to an expert at my local chicken shop (which is now closed for the weekend). Thereafter, I saw that the solution expired 6 months ago. Does anyone have a sense of whether it still might've been effective? I have small concerns (small as it seems unlikely) that the chemicals might become more potent or change with time to become more harmful somehow... Secondly, the water I dunked them in and the others bucket of water that started fresh and then became slightly contaminated throughout, what is the best way to dispose of this?

Thanks in advance.

Spraying fowls

How long should the horse be kept off the grass where the dogs and kennels were washed?