For cuts in the field i’ve been known to cover with a section of birch polypore cut into a plaster sized piece and placed over a clotted wound.
If poss, i use super glue to stick back the skin, but it’s very important to ensure the wound is free of dirt and debris.
On an open wound such as a graze, i’d throughly cleanse the area first, then smear with savlon or similar, then let it breath. If there’s risk from getting dirty in the next day or two, cover with gauze and a bandage, however on removal you may break the healing skin and delay healing.
Spray on plasters? Na, let you’re body deal with it like it can do..
As for Hornets…Still plenty around. The brood die off each year, so the queen needs to start again from scratch each spring.
She’ll chew off bits of wood and make a small nest with many cells, in which she’ll lay an egg in each of them. After around a week, they’ll hatch and the queen will now feed them insects for another couple of weeks until they seal themselves into their cell and transform into adults.
These become workers and will undertake all the previous duties that the queen has been doing apart from egg laying(only the queen does that), so nest building and feeding of the immature(larvae) hornets. It’s at this time of year now that the brood will start to grow and by the late summer the colony will peak. This is when more can be seen.
HTH