[test1235]

https://en.wikipedia.org/wiki/Heterorhabditis_bacteriophora

"Heterorhabditis bacteriophora is a species of entomopathogenic nematode known commonly as beneficial nematodes. They are microscopic and are used in gardening as a form of biological pest control."

That's fascinating. Have you noticed any knock-on effects? E.g. fall in the number of other wildlife which might normally feed on those insects?

[mattwdelong]

Nothing of note. I still see plenty of turkeys, frogs and possums. I spray the beneficials so that it does not harm other beneficial insects and I assume if there is a healthy population of insects in general, there is still enough food source for wildlife. I can’t think of anything that prefers ticks as their main diet.

[uticus]

> I can’t think of anything that prefers ticks as their main diet.

not 'main diet,' but can confirm free range guineas, chickens, etc help with the tick pressure.