I mixed up some BT a few weeks ago to spray my struggling (due to caterpillars) Brussels sprouts. Sprayed them, then left the liquid in the sprayer and hit them again this week.
I noticed when spraying, that the BT mix smells bad - like strong manure bad. Is it still safe to use, or should I mix it fresh each time and dump the leftovers?
I noticed when spraying, that the BT mix smells bad - like strong manure bad. Is it still safe to use, or should I mix it fresh each time and dump the leftovers?