i just started using equine fresh in my mouse tubs,and 3 of the tubs drained the water bottles overnight after a bedding change.the mice turned the pellets into powder and the expansion drained the bottles.
so a little bit goes a long ways,i now use a level small deli cup of pellets in each van ness small tub.i've only changed out once but it seems like i'll get less odor and about 2 more days between changes.
still experminating with the asfr's and rats.have fun!