You can try to suffocate them with aseline. But honestly, lice have become so resistant to over the counter stuff that your best bet is either a lice removal clinic or a prescription from your pediatrician for something like “sklice “. And then don’t forget to wash all bedding in super hot water and dry at very high temps. Bag up stuffed animals.
Get nix
And pick up head in shoulders and a har cap use nix as directed and every day put h&s in hair with a cap for 30 min then wash trust me my eldest girls took me exactly 7 days also put all blankets and stuffed toys pillows ect in bags for 3 days then wash lice dies after 4 days no food nits can take 7 days.. spray beds with a spray made of mix with warm water and (bleach) if you have white furniture
I did the rid at Walmart a few years back I think it didn’t do a good job the bugs I had were a weird color or something I then tried alcohol in my hair then after that I did 8 hours of jelly I was pregnant at the time and the lice were like a super bug and didn’t want to die