pet-shops do not know what is best for you snake, only what is best for their sales numbers. i would not trust the word of ANY pet-shop employee. you're better off reading the stickied care sheets located in the Husbandry section of the forum.
if you have a smart phone, download the app TapaTalk. it allows you to upload photos from your phone gallery.
you really need to double down and get serious about your pets. multiple escapes from multiple pets within such a small timeframe is unacceptable. however, i'm relieved this had a happy ending. i know that feeling of panic seeing an empty tank, and i made sure it would never happen again.