How should I handle MLC direct lying?

[amg2]

Thank you. Yes I understand the decsions should be ABOUT ME. And IF I decide that it's probably best the he NOT do a particular task, make a particular visit, how do I decline his offer without being mean spirited? How do I lightly and confidently tell him "You're absolutely right. I don't have time to do (chore) and may not even know how. Your're not working and are DYING to come over and do (chore). However, I don't want to owe you anything, feel obligated to you or feel like I'm treating you badly since you'll only be allowed in the garage, not the house, while I'm not home."?

Saying no without appearing like a total bitter bi*ch is what I don't know how to do. Or having it turn into relationship talk. I agree that he's using it as a way to stay connected, but he also is depressed and "doing things"/feeling useful seems to make him happy. To this point his visits to do work have gone fine, other than my feeling small guilt/obligation about being dark after.

PLEASE AND THANK YOU!