Spider mites my bedroom and soapy water!!

hiya can anyone tell me do spider mites just live on the plants or can they live other places because i had my plants in my room n they have got spider mites i jus keep thinking they will be crawling around my bedroom sumwhere? also i was told that soapy water can help to get rid of them does anyone know if this is true? and also if a plant has spider mites do they kill the leaves?

the mits will harm the leaves, but itll take a lot to kill theleaves. however, they will build webs everywhere, especially on the buds. soapy water or neem oil in a spay bottle works well if applied lightly