Great word choice! Infest is what I call a very “actable” word – you can visualize a great deal with it, yet most of all, you can “do” a lot with it. Used appropriately it will act for you. So, Bravo!, regarding your selection.
Beyond the initial rules of grammar, when I find a word I like, and I want to apply it to a situation within a sentence I am crafting, I always try to value-size the root word I begin with, in order to see if I could flush out a richer and more colorful approach to what it is I want to say. Then, I sometimes, for fun, strain the word and the intention behind it through the Shakespeare Funnel (I made that up, I think… probably not) , to blast it about for a while, and see where it lands.
Identify your aim. Let the objective – what you want to accomplish in using the word – rule your application of it. Think beyond the word itself, and earn your right to deliver it effectively, by understanding the appropriate grammatical rule, and then messing around and riffing with it. Say the sentence out loud. Take it for a test drive, by saying it, in a sentence, or in fragments, to several different people – or the collection of imaginary characters hovering around you, the ones instantly summoned forth to converse with you in moments like these. Does it feel right? Does it fit? Am I accomplishing what it is I had set out to accomplish in the first place…? Or have I found something better. Or worse. You decide. Take the ride! See where it leads you.
“I sense this unseemly vile infestation oozing about the beauteous world I long to inhabit, whenever your hideous presence arrives upon my sacred doorstep.” – FB