Desperate with roach infestation - cockroach bait gel suggestions?

What's up people, I've been fighting a major cockroach problem for weeks now and after using various different sprays I finally called a cockroach exterminator near me who explained the bug development process and how understanding these stages is essential for lasting elimination - turns out I was only attacking the grown ones but missing the developing insects which is why they never disappeared, plus he identified some problem symptoms I had overlooked like dark spots behind my fridge and now I'm using professional gel in key locations while practicing his recommendations about blocking entry points, fixing leaks, and proper sanitation - identifying the type was also crucial since these compact roaches multiply rapidly than other types, and while the extermination fees was expensive upfront, the expert treatment prevented tons of

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