BX23S wasp nest in roll bar / sprayed wasp killer / how to clean out?

[M59]

I wouldn't spend too much effort worrying about paint damage given Kubota probably selected paint suitable for exposure the petroleum based fluids ( diesel fuel, hydraulic fluid, engine oil, grease for zerks ).

I too had issues with wasps, white faced hornets, yellow jackets nesting in wire/ hydraulic routing holes in frame, ROPS, etc and filled entrance to all these with expanding urethane foam. Foam looks a little ugly but it sure keeps those buggers from taking up residence.

 

[oosik]

The yellow jackets are very creative around here. Any open hole, pipe or tubing. Spray with wasp killer - scrape out the nest with bent coat hanger. Better yet - leave the soaked nest where it is. May deter future infestations.

 

[M59]

Slightly off topic but yellow jacket related. Jackets like to take up home building in the mole tunnels in lawn and usually the local black bears hear them and dig them out for food BEFORE I run over the nest with lawn mower but occasionally the nest is too deep for the bears. Those get a pint of diesel mixed with a little gas and a lit match. When that doesn't work then, at night, take the M59 out to the nest and drop some dirt with backhoe onto the hole and compact the area with the back of the hoe bucket. End of problem.