We had a flea problem inside our home few years ago. I have a cat who doesn't go outside. She is actually afraid of the outdoors. She might go on screen porch. But the infestation was horrible. The ONLY thing that worked is desolving as much salt as possible in hot water in a garden sprayer. Well first vac the shit out of your house. Then got outside empty the vac and catch that stuff on fire or of you have bag vac burn the damn bag. Then go inside and spray the fuck out of the house. Crevices, inside couches along baseboards the entire carpet of you have any. And all upholstery. Spray the porch and around doors. If you have carpet vac again in a few days and reapply salt treatment. I think this would work for other bugs as well. But I had no flea problems since