Yard that has had ringworm - is it safe to move onto yard and into stable which infected horse was stabled.?

the yard had ringworm - they said the stable was disinfected but i am worried about contaminating our pony, we will not be moving in for month or so is there anything i can do.the contaminated horse is now off the yard and other horses are being kept in - so they appear to of done the right things but worried about spore left in stable as i know they have a life of up to 12months any advice would be great