i NEED help - cleaning

had family care for her whilst I was gone, I gave them as much precise instruction as I could

I feel real fucking awful abt this, a piece of wood in her viv has grown BLUE and grey mold

They hadnt cleaned waste either, so some of it on her rock had grown a white fuzz mold and its horrible, id taken everything out her viv for now. Im unsure how boilings going to solve this.

Ive had this piece for years and never had anything like this, Usually I boil her rocks/stones/wood etc to clean it,

do I have to throw it out or can I salvage it??

I dont have any fancy chemicals in the house, just household cleaners and bleach.

left the glass open as much as I can without her escaping for ventilation- the vents at the back are not obstructed or anything.

im freaking out on what im supposed to do now, any guidance at all?????