I'm constructing a false bottom out of egg crate, and I'm wondering if I can use this pet-resistant insect screen instead of weed cloth? I believe it's made out of polyester. The holes are pretty much the same size as the stock image shows- at least on my computer screen. I also uploaded a photo of it against my hand to give some size reference. Will the substrate fall through the holes, or are they small enough? I just figured I'd rather use something I already have than spend more money.