Try attaching a secure run to the coop so they can go outside with or without you. Make sure it is secured top bottom and sides so nothing can get in to harm them. Some secure the bottom with chicken wire to allow them to have access to scratch yet it prevents things from digging under. Also, research the deep litter method. Many on this site use this not only to prolong clean out periods, but also to allow them to scratch threw their litter for good bugs. I don't use either of these methods as I free range so I can't give you details, however if you do a search on either of those methods you will find many that do and they will give great advice on what worked for them.