This is doing my head in! So under a bunk in the saloon area of the boat where I had stored food which was in thick packaging you know the type Vindaloo, butter chicken base etc. the corners had been chewed about the size of a 5cent piece but unknown to me whatever it was had a field day with every packet over a dozen which I had to throw out! After thT I am vigilante with putting food away into storage tubs and even the microwave as we have had nibbles on all sorts of things! I have put the Lure and Kill cockroach baits around along with various mixes using Borax. We even one night laid down on the floor a 50mm X 50mm strong plumbers tape with ends turned to stick to the carpet, then placed a piece of cheese in the middle! What the? Our response to find the whole lot gone never to be seen again! We thought we would find a cockroach stuck on the tape but no it's a smart bugger! What could we have on board? Any clues? We have s 39 foot Feros Hartley yacht with a lot of under floor storage! We have let off two cockroach bombs but we are still finding droppings here and there! I last week revisited area by area to place pure 100% t tree oil by wiping down the sides and around the whole perimeter of each storage area! I just don't know what else to do! All I can say is 'Arrrrrrrrrrgh' any suggestions please! Cheers

Sounds like you got a case of the 'Lauries'

Ninja possum!

Unless you're weird and are calling mice cockroaches, you have a mouse onboard
Get the proper baits (blue block ones) and rub them in crunchy peanut butter before setting them.
Leave a door open so they/it can get out once consumed the poison or you will have to deal with the smell of a dean mouse on your boat.
Good luck. I had one in my car which took about 3 weeks to identify after pulling the seats and door panels off but not before eating the door seals and foam around the seats.

Get a Queensland state of origin team on the boat
they've been smashing cockroaches for over a decade.

Killing cockroaches is fairly simple, sprays, bombs, and borax will to the job.

What they won't do is kill the egg nests, which will hatch out, and you will return to the same infestation. You need to get baits that target the eggs, the cockroaches eat them and return the poison to the nests. A couple of life cycles and they will be gone.

You must remove any other source of food so they only eat the baits, obvious food, but the junk under the stove, fridge etc. even cardboard is a food source- particularly if there is dampness and on the floor.

Good commercial kitchens when they get deliveries, they remove all the cardboard packaging and repack in plastic crates etc, as the greatest source of eggs coming in for a infestation comes in the cardboard packaging.

Lesson learnt....

Cockroach bait doesn't deter mice!

5 ltrs of unleaded and a kyak

They used to flood/ sink pearling luggers back on the day to get rid of cockroaches

You need guns, big arse powerful guns