really nature's little speed bumps?
any kind of snaffle (not twisted) will be fine. Rollers are mainly for horses that need a bit of help focusing, or if they get a bit nervous. I'd say try a rubber or copper mouth snaffle. Just be careful with the copper, if it's cold out and you use hot water or a bit warmer, the copper gets hot fast!
do you mean rollers as in mouth pieces that roll round? they encourage saliva but make the bit more mobile in the mouth. eggbutts are indeed very soft but even softer is the good old french link snaffle - (do not confuse it with a dr bristol - the link must be kidney shaped not rectangular!!! dr bristols are very tough bits!!). They are even softer than an eggbutt snaffle and a couple of my guys are in them and going really well.
About the mildest bit possible is a smooth rubber mullen mouth loose ring snaffle bit. A smooth copper mouth with a center roller is also mild. When you determine what will be mildest for your horse, it is best to examine the mouth and assess whether the tongue is wide and thick, and whether the palate is deep or shallow. A thicker mouthpiece on a bit is gentler, but if a horse has a shallow palate and large tongue, it may not be comfortable for him. The bit should also be sized so that the mouthpiece is just over 1/4 inch wider than the mouth on each side, or a total of about 1/2 to 3/4 of an inch wider than the width of the mouth from the corner of the lips on one side to the corner of the lips on the other. If the horse has ample space in the mouth cavity, a thicker mouthpiece is best. A mouthpiece with any irregularities, like ridges, is always severe and very damaging to tissues. The thinner the mouthpiece, the more damage it inflicts. Because a snaffle bit is immediately engaged whenever any rein contact is made, it is impossible for a ridged bit to be anything but harsh, even in good hands.
You can put them in the washer, delicate cycle is recommended. You can use regular detergent but no bleach as this eats away at the rubber backing. I also would not recommend using fabric softener as this makes most fabrics water resistant (the point of a your floor mat is to soak up water, I assume) and extends drying time. Do not put rubber backed mats in the dryer as this dries out the rubber and causes breakage and flaking, even on low heat. Hang them up to dry. I suggest hanging them to dry INSIDE as direct sunlight can bleach out the color of darker mats. If you hang them to dry outside under direct sunlight, hang them fabric side up as direct sunlight can also cause the rubber to dry and flake. (This may not be true for your state, I live in Las Vegas where we're averaging 115 degrees right now during the day, if you live in a cooler state this may not apply.) Hope this helps!
finished assurance will pay; minus your deductible. PA could use a dry barrel style hydrant. those may be costly. according to what you reported, you are able to desire to be ok. reliable good fortune. purchase a slower vehicle.