We do not usually recommend Suspend for bedbug treatments because of the risk of resistance. Please take a look at our bedbug kits to see the products we recommend for bedbug treatments: http://www.domyownpestcontrol.com/bed-bug-kits-c-39_97.html
You will notice that there are several product formulations in each kit and this is to guard against resistance issues.
Ultracide is a ready to use aerosol can that contains an insecticide and insect growth regulator. You do not need to also use Suspend SC, which cannot be used on carpets inside so is not recommended for inside flea control. We do have a great guide here on "How to Get Rid of Fleas" that will give helpful advice on what should be done.
Unfortunately, per the product label the maximum mix rate of Suspend SC is 1.5 fl oz per gallon of water depending on the insects you are targeting. We cannot advise mixing insecticides at a higher rate than the product label by the manufacturer due to a few reasons.
The product labels for insecticides, herbicides, fungicides, etc have been reviewed and approved by the EPA and, therefore, provides the legally amount allowed to be applied per application or per year for that pesticide or herbicide. The Label is the Law.
Second, the manufacturers and reseach teams spend months/years and money into into developing and testing products before product labels are issued, approved and available for retail. The application rates listed on the product labels have been proven scientifically to be effective for treating the pests/weeds/diseases on that label therefore mixing at a higher rate than what is recommended is not going to necessarily going to be better or give faster results. In fact, using too much product can cause undesired effects like insect repellency, unnecessary risk to people and non-target animals, and simply wasting your time and money.
Suspend SC should not be applied in a steamer. We recommed steaming first and then apply Suspend SC with a pump sprayer to cracks and crevices quarterly.
The main thing to know when dealing with fleas is that there is no overnight fix for them, it can take multiple applications to completely eliminate them sometimes 2-3 treatments or more. You also want to make sure that you are following the instructions on the product labels that you are using. Suspend SC is not labeled to be used anymore often than once every 21 days. Per the product label for indoor applications, you should also only apply as a coarse, low pressure crack and crevice spot treatment to problem areas and infested habitats. Do not treat entire floor, carpet or floor coverings. Do not apply as a space spray. Application to furniture should be restricted to areas where prolonged contact by humans will not occur. Care should be taken to limit spot treatment to pet beds and infested floor coverings. Suspend SC would not be a good choice for indoor flea control because it can not be used over carpeted areas, it must be kept to cracks and crevices only.
For indoors, we would highly recommend our Indoor Flea Kit. It is our most popular product for indoor flea control and is usually the final treatment that people end up using that works when they have tried everything else.
Here is a link for you to read further: http://www.domyownpestcontrol.com/indoor-flea-control-a-239.html