I'm fortunate enough to be able to buy prescreened fir bark for the gritty mix, and the pine bark I buy for the 5:1:1 mix has never been so fine I need to screen some of the dust out - IOW, I wouldn't find need to screen the bark for the 5:1:1 mix unless it was because it was too coarse. I usually find, with the bark I get, that I need a little peat for moisture retention, but if I had PBFs on hand from screenings, I'd use that up instead of the peat. If I had a LOT of fine screenings, I'd use them to topdress anything I have growing - the gardens/ beds/ lawn .... I like coarse seed starting mixes because I don't want to start seeds in a soil I wouldn't grow in, and roots simply grow much better in a well-aerated medium. I usually sprinkle seeds on top of either the 5:1:1 or gritty mix and keep the medium moist. Sometimes, I'll cover seeds in the 5:1:1 with a little peat, or seeds in the gritty mix with Turface screenings. Frequently, I've used an over-turned pot on top of the seeds to lock moisture in but still allow some air circulation via the drain hole. Al

I use the Mr. Mister mop with BONA and microfiber cloths from Solutions. I have wood floors in every room except the bath and laundry. The mop is handy because I can put the BONA inside, but the head tends to flop around and you have to refold/change the cloth every so often. I find it easier to just get on my hands and knees unless I'm doing more than a couple of rooms at a time. I have never used it dry. I don't baby my floors, but those Solutions cloths are very *grabby*. I'd be afraid little rocks would get caught in the cloth and add more scratches to the floor. Before mopping, I use a regular old-fashioned dust mop to push everything out the front or back door. No kiddies here so I don't have to mop very often. I sweep or vacuum every few days and spot clean as necessary. I believe BONA is short for BONAKEMI. I purchase the big jug of floor cleaner from the Bona website. I also use it to clean wood furniture and cabinets - I haven't bought Pledge or Murphy or Endust or anything like that in ages. I could be paying way too much for the BONA. I've never comparison shopped it.

People often lost sight of the fact that most soils have gobs of trace minerals, most of which are not being utilized (or even mobile at any one time). I blame the mineral supplement people at least partly. It all depends on what your soil is, so the discussion is at a disadvantage without that. But unless you are growing in pure silica sand (which rarely occurs anywhere, if you look closely at sand it will usually have all different colors of rocks represented), you will likely have plenty. As for depleting it and not putting it back, I suppose if you didn't import anything to your yard, there would be a nonzero risk of that if your soil was poor. But most of us import compost, and we import food as well, and compost the scraps. We don't live in a bubble. Just for kicks, let's look at one mineral and one vegetable. How about zucchini, which according to the following link http://www.lenntech.com/fruit-vegetable-mineral-content.htm has 0.7 mg Zn per 100 mg. Background Zn in my Missouri clay runs about 60 mg/kg. How many pounds of zucchini would I have to remove from to top 6" of a 20x20 ft garden to deplete the Zn by 50%?

A few points. A competent general contractor will have sub contractors do things to minimize the dust and debris. They will all say it it difficult to eliminate 100% of it, but the better ones come close. Some general things that come to mind immediately, based on your brief description are 1) seal off individual rooms, using plastic sheating and tape, 2.) do all cutting outside, 3.) clean up at the end of each and every day, -- I'll emphasize meticulously clean up everything, at the end of any day no debris or demolition materials left inside, and any debris, cuttings or sawdust created outside in a driveway or parking lot are cleaned up daily (not the next morning). If they are not doing 2.) then quickly find another CG. Nos 1 & 3 are standard, and the degree to which they do this is a measure of their workmanship. If you have any type of forced air heating or cooling then get a full duct cleaning after all the work is complete. And of course change air filters after the cleaning.