I am going on vacation at the end of the week for 10 days. I have dad coming over to change the water periodically and to check the feed. I have a question about my floor, I currently scrape it every day and I know that my dad won't want to scrape it because I just have a hand scraper right now. I don't really want to leave the floor full of droppings for 10 days, should I throw down some deep litter, if so, are pine shavings alright and also, how deep does it need to be? Thank you.