No need to wait to use newspaper, just use the black & white sections though. Colored inks (like in ads, etc) may run if wet, it's probrably not that big of a deal, but I try not to use any colored ink sections w/ my animals. I've never had a single problem with newspaper in 15 years of keeping. Granted, I've switched from time to time, generally for something more visually pleasing to the eye, or a little lower maintenance (although newspaper is super easy for cleaning cages, you'll have more frequent changes) and rest assure as soon as you put him/her in on new, clean paper...they'll go...lol...usually within a few seconds!! So don't get discouraged...lol!! Very "keeper" friendly, easy to change - so instead of spot cleaning and sporatic bedding replacement, you'll have a 100% sanitary substrate. Good decision if you ask me!! Oh yeah - if by chance you want to go with something a little more "natural" looking...go with butcher's paper (local hardware store - also affordable) they have a variety of sizes, and come in rolls, it has a more natural color, and allows you to do a little more with decor if you'd like. Hope this helps!! Good luck!!