Harmful?

[CORN_SNAKE91]

I go to the petstore today and I asked for reptile cage cleaner (for my corn snake). Turns out they dont sell any but an employee tells me that I can use benadyne (sp?). Anyways I ask if its harmful and she says not at all, considering I use diluted benadyne. Could any one tell me for sure? (I can't trust a pet store too much)..