Hi, welcome to the forums, and to the world of bunnies! What kind of bunnies do you have? We love pictures
. Like Quantum said, definitely check out the “bunny info” link at the top of the page for some great information on bonding, litter training, and the important parts of a good diet!
Spaying both your bunnies when they are old enough is important, considering that you have two females. As they get older and their hormones increase, pooping/marking behavior, as well as mounting, will naturally increase and probably will not subside without a spay. However, even before spay time it’s a good idea to take your bunnies in to see a vet for a general health checkup, and also to make sure that they are both *actually* female. It may seem silly, but baby bunnies are notoriously difficult to sex, and mistakes happen ALL the time…don’t want to end up with an accidental litter! Are any of these vets near you? http://www.njhrs.com/vet.htm
As for your cage, it would be a good idea to start using a litter box. There’s really no need for wood shavings on the bottom of the entire cage – in fact, it may be confusing your bunnies as to where they should do their business. A lot of our members like to use cat litter boxes minus the lid (size depending on what kind of bunny you have, and keep in mind that they will grow!) with Carefresh, Yesterday’s News (cat kind, non-clumping and unscented) or wood stove pellets. Hay in the litter box is a great idea too…for whatever reasons, bunnies seem to like to munch on hay while they do their business.