In my opinion, no. It seems to me that when you disrupt the living area
that they've gotten
used to, it stresses them out a bit. You know when you bring a new
tarantula home and
get them set up and moved into thier new enclosure, they often pace around
and climb the
walls until they get calmed down and setteled in. Turning thier substrate
and moving thier
furnishings around seems to do the same thing. I believe that it would
really annoy the fossorial
and arboreal species that put alot of time and effort into digging/building
thier sanctuaries to
only have to do it over again if we disrupt the changes they have made. I
suspect it would
probably feel like being transferred and starting over all over again.
Unless you know you have a
problem such as mold or mites in your animals homes, I would leave the
substrate as is and totally
change it maybe 2 or 3 times a year.
Again, these are just my opinions and practices that I've used with my
tarantulas and scorpions
for the past 13 years, and it seems to work fine for me.