On a budget? We also have the DIY Lice Removal Kit Option. This kit includes all the non-toxic products we use on our treatments:

Oil rinse (with dimethicone): To suffocate any hatched lice.
Enzyme Mousse: softens the nits glue to make them easier to remove or comb-out
Terminator Lice Comb: The best metal comb to remove lice and nits. The ridged teeth are close together to remove lice and nits effectively.