I’m posting this segment slightly out of order but my take on hummingbird care is soon to follow. I have fortunately not needed this form of ant guard due to the type of nectar feeder I’ve been using. I do however use Aspects 384 Nectar Guard Tips, pictured last below, over the individual feeding ports to protect the nectar from bees, ants, etc. and in turn preventing the nectar from spoiling sooner. Just fill part-way with water and hopefully your insect pest issues will be a thing of the past!