I also am a fan of the Humzinger feeders. I must be, I have 3! Easy to clean and they don't blow in the wind like the bottle feeders which ends up spilling the nectar out on the ground where the ants find it & build mounds & then you have double the problems.
I need to make some syrup & clean & refill mine. It's on the list!
Melanie, Margaret has a great way to clean the ports on those things. Use an old mascara brush after you've washed all the mascara off it. I stopped at the $ store & bought $1 mascara, threw away the mascara & kept the brush. WAY better than pipe cleaners or toothbrushes! Get the kind that has the old fashioned bushes though, not those new fangled things.