No, PestXpert Home Barrier Insect Killer RTU should not be mixed with an IGR. It should only be mixed with a concentrate that you are mixing with water or used as a stand alone product mixed with water.
PestXpert Home Barrier Insect Killer RTU can be used both indoors and outdoors for flea control. According to the product label for fleas indoors remove pet bedding and destroy or clean thoroughly. Spray pet resting quarters. Adult Fleas and Larvae contacted by spray will be killed. Put fresh bedding down once the spray has dried. Do not spray animals directly. For best results, pets should be treated with an appropriate flea and/or tick control product registered for use on pets before allowing them to return to the treated area. Spray rugs and carpets where infestations are bad. Delicate fabrics should be tested for staining in an inconspicuous area prior to use. For fleas outdoors you want to apply thoroughly to infestation in bushes, grass or weeds.
PestXpert Home Barrier Insect Killer RTU is labeled to help control spiders. Per the label, that includes brown recluse, black widow, and hobo spiders.
PestXpert Home Barrier Insect Killer RTU can be applied for bedbugs as follows: “Bed Bugs and Lice: Remove linens and wash before reuse. Lightly spray mattresses, especially tufts, folds and edges. Apply to the interior of the frame. Allow to dry before remaking bed.” Please take a few moments to review our treatment article on How to Get Rid of Bedbugs for more information on a successful eradication program.