Yes indeed! My slug-like abilities also enabled me to do the same.I have all the woodworking skills of a slug and have managed to do this so it ain't difficult.
You need mesh which is available on t'internet or cheapish from your Th***** agent. (Advantage here is it's the right size for my nationals.)
Cut the right sized hole in your floor. ( I used a jigsaw.)
Then drawing pin the mesh on.
Easy to take off to clean.
If I can, you can.