If they have the mucousy diarrhea again take a pic and post it.

How long have they had the diarrhea?

I am unsure if you are saying it is the poop that does not smell or the Fox Valley 32/40, but I doubt the formula is causing this if it is a newly opened bag.... the change to the Fox Valley 20/50 is to adjust the protein and fat contents (that is what the numbers "32/40" and "20/50" represent) to be more in line with the needs of older squirrels. If you order the Fox Valley 20/50, you can mix the formula 1 part 32/40 and 1 part 20/50 until the 32/40 is used up. I'd not worry about placing a rush order for the 20/50, they should be fine a few more days.

A note about avocado, only the "meat" and not the skin or pit should be given to the squirrels. Avocado skin, pits, leaves and bark contain a fungicide substance called persin which is toxic to rodents... a squirrel eating the skin or pits can result in diarrhea.

Did they by chance get the skin and or pits of the avocado?