I have had 3 different spiritual animals throughout my life. The first was a Puma, all throughout my childhood. The second was an Owl. And over the past week or so I notice moths, only at my house though just like you said. If you google the "spiritual meaning of moth" I'm sure you'll find plenty of websites that all have different answers. But if you do believe that it is a sign or some sort of synchronicity then I think the first website you look on will have the perfect answer for you. The deeper you dig, the more confused you'll get.