My almost 4 yr. old grandson loves to wake up in the night / early morning while everyone else is sleeping and wander around the house and get into things. He has done this ever since he could climb out of his crib and for sure now that he is sleeping in a regular bed. He does this at his home and at our home. Mostly, what he does is annoying things such as chewing up a whole PACKAGE of gum, stringing a container of dental floss from one end of the house to another, using my easy child's mascara all over himself and of course working it into the carpet too and who knows what else. He has had other antics, but that was what he did the last time he was here that we know of. We put a baby gate up, to hopefully block him from the main part of the house and to let him have the ability to come wake us if he wants or needs to during the night. We have instructed him to come to us. That doesn't work, he climbs over it. I have even raised it a bit trying to make it too tall and unstable for him to climb, but he is too smart for that! He is an escape artist! We have a swimming pool in the back yard and that has always concerned me. We changed out the deadbolt lock to one that uses a key on the inside and outside and when our grandson is here, we take the key out of the lock and hide it after he goes to bed. Hopefully we have that problem solved. This is a huge safety issue. He could decide to cook, there are many things that could hurt him if left to his own devices. We have to come up with a solution. The last time we had him and he spent the night, I told him that if he didn't stay in his bed like he was supposed to,that we would have to take him home in the morning. I also told him that if he stayed in his bed like I asked or came to me during the night he could spend another night. He loves being here, begs to come, but guess what???? He was up wandering around getting into stuff! I hated it, but I had to take him home. His mother did this basically her whole life and drove me bonkers! It doesn't make for a peaceful life for anyone. I would like to come up with a solution. I never figured one out for his mom, and thus far I haven't for him either. I'm a bit afraid that my sweet innocent, darling, beautiful grandson is going to end up with a bipolar diagnosis too. Oh, the similarities between him and his mother are AMAZING! I have been looking at alarms. I have found numerous alarms that are battery operated. I can't very well put one in his bedroom here, because he does get up to use the restroom at night and I don't want to frighten him with a loud alarm going off at least if he is getting up to use the restroom. I have considered putting one in the hallway leading towards the living room. In that case, considering the safety issues, I am not so concerned about a loud alarm scaring him a bit AND letting me know that he is up and about. What are your opinions and suggestions and other options concerning this??? What I really would like to find is an alarm that is battery operated with an infrared beam. That way when and if he crossed the beam the alarm would go off. I have yet to find anything like this. Could it be, that this is my opportunity to patent a child safety product and make my millions?????! Any suggestions would be appreciated.