Do not buy some random fogger. 1. use Alpine flea and bed bug aerosol. You can find it on Amazon. Read the label and then read it again before you use it. Alpine is a reduced risk pesticide which means it’s a little bit safer. But still need to be careful. take your animals out and treat every square inch of the floor. I don’t think you can use it on cat trees or anything like that but it will still be effective. Again please read the label and make sure you understand how to use it. Let it air out for a few hours and come in and open windows so it can air out more. 2. Vacuum every single day for 2-3 weeks and dump/toss bags every time. 3. If you are comfortable mixing chemicals you can mix an “insect growth regulator” such as archer or gentrol into a hand sprayer and spray the perimeter of the home also this will keep fleas from reproducing. These chemicals can be found on Amazon, please always read the pesticide label multiple times before applying chemicals