I have read that vivs are supposed to be cleaned out every 4 weeks mine is due its first clean this weekend, however he had his first feed last week and i have not seen him at all this week, I know he has been moving between hides but it took so long to get him to feed just wondered if cleaning it all out would stress him out a little as obviously I will have to take him out, while I do this.
i personally slean out my vivs that have a wood substrate(such as aspen) ever6 weeks or when they shed which is roughly the same time. if they are on kitchen paper every 2-3 days.