I use any number of gecko as a cricket clean-up crew. A Tokay pair will work as long as the whole room has high humidity. The male will do fine in a drier room but the female could/will egg bind.
I've also used Golden Geckos and Vorax as well. Usually in pairs. Regardless, I still make sure they get fed in addition to the extra loose crickets if there is not an open container of feeders of some sort.
The reduction of loose crickets will reduce the spider explosion but I've not seen any evidence that the geckos actually eat spiders. Even the really big juicy ones hiding in the racks.
Good luck.