Triclopyr production is rather low-key stuff, but it's very powerful in it's effectiveness. It mimics a natural auxin/hormone and signals a plant to start uncontrolled growth which busts cells and demands more out of a plant than it could hope to provide. It's basically oxamic acid (found in spinach in measurable quantity, fwiw) and catalysts mostly driven by (and consumed with) CO2...which, btw, are 2 of the main chemicals it breaks down into (oxamic acid/CO2)...along with a few other organic acids like TCP (in small amounts) and TMP (even smaller amounts, and not produced via water degradation). Now, TCP exposure has been linked to lower sperm counts in human males...but the TCP produced in this breakdown is extremely weak, a small amount, and rarely persistent...especially in water and moist soil (nearly non-existent in air). The continuing breakdown from Triclopyr to TCP/TMP compounds to CO2 and lesser organic acids (such as oxalic acid) is rather quick.. If it's applied properly (aka, not getting it all over you...because it's a mild skin irritant, too) it's not much of an issue...especially considering how extremely low it's toxicity is in the air. It nearly fully breaks down REALLY quickly in the presence of direct light (minutes to hours). The further breakdown of TCP/TMP mainly becomes CO2. Aside from the small amount of time the breakdown consists of TCP, there's no "red flags" in the production or degradation productions of Triclopyr. Even the low-sperm count alarms of TCP aren't much of an issue considering how little of it that is produced and that you're going to have be putting bare hands all over soil where Triclopyr has been recently applied in order to get it on you...unless you're improperly applying it and getting it all over you...which you'd know because it's a mild skin irritant because of the quick chemical reaction changes that occur once it's exposed to the environment (especially direct light or moisture).

Triclopyr is what you put on your stump. It's moderately persistent in soil, but it's broken down after a few weeks to a couple months. It is systemic, which means it will be in the plant, itself on uptake. I'd wait at least 1-2 months after last application to an area to reclaim it for food plant uses, myself.

I would be a little concerned that you have no grass germination after 14 days. Tall fescue is a pretty quick germinater, 14 days is at the long end of time for it (unless it says differently on the bag of seed). Have you been watering your lawn 2-3 times a day for 5-10 minutes each time to keep the seeds moist? The Weed-B-Gone max is not going to help your new grass, it can only hurt. I'm pretty sure that it works by foliar absorbtion, so if you have no seedlings, it might be ok especially since it rained. The only thing your can really do anyway is wait and seed what happens, or overseed again. I would give it a week to make that decision.

This is a good time to kill broadleaf weeds like plantain, dandelions, clover, violets and creeping charlie. Spot spray with weed-be-gone or equivalent. You can purchase ready to use in a hand sprayer or you could buy a pint of concentrate to use in a pump up sprayer. Make sure you buy the right stuff. (broadleaf weed killer) and read the label thoroughly Follow the directions carefully. Some tough weeds may need a follow up application in 10 days. Try to minimize chemical use on your lawn Bill Hill