i used some carefresh once and that helped the smell a little better than the aspen, but i dont like it as much as aspen
i initially really didnt want to use aspen, i didnt want the snakes hiding where there wasnt a hide, but i gave into them
aspen seems to work better than do most other substrates, for the smell dept at my house
if your garters are anything like mine were, they will get stinky and poop everywhere
they seem to be like little mice and just constantly drip poop out their stinky little bums, small little turds everywhere